Lovibond PM 620 Instruction Manual

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Instruction manual

Photometer-System

620

Page 2

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Important steps before using the photometer

Please carry out the following steps as described in the Instruction manual. Become familiar with your new photometer before starting with the ﬁrst tests:

• Unpacking and inspection of delivery contents, see page 162.

• Install the batteries, see page 112, 113.

Perform the following settings in the Mode-Menu; Instruction manual from page 123 and following:

• MODE 10: select language

• MODE 12: set date and time

• MODE 34: perform “Delete data“

• MODE 69: perform “User m. init” to initialise the user polynomial system

If required set other functions.

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Wichtige Information

Um die Qualität unserer Umwelt zu erhalten, beschützen und zu verbessern

Entsorgung von elektronischen Geräten in der Europäischen Union

Aufgrund der Europäischen Verordnung 2012/19/EU darf Ihr elektronisches Gerät

nicht mit dem normalen Hausmüll entsorgt werden!

Tintometer GmbH entsorgt ihr elektrisches Gerät auf eine professionelle und für die Umwelt verantwortungsvolle Weise. Dieser Service ist, die Transportkosten

nicht inbegriffen, kostenlos. Dieser Service gilt ausschließlich für elektrische Geräte

die nach dem 13.08.2005 erworben wurden. Senden Sie Ihre zu entsorgenden

Tintometer Geräte frei Haus an Ihren Lieferanten.

Important Information

To Preserve, Protect and Improve the Quality of the Environment

Disposal of Electrical Equipment in the European Union

Because of the European Directive 2012/19/EU your electrical instrument must not

be disposed of with normal household waste!

Tintometer GmbH will dispose of your electrical instrument in a professional

and environmentally responsible manner. This service, excluding the cost of

transportation is free of charge. This service only applies to electrical instruments

purchased after 13th August 2005. Send your electrical Tintometer instruments for

disposal freight prepaid to your supplier.

Notice importante

Conserver, protéger et optimiser la qualité de l’environnement

Élimination du matériel électrique dans l’Union Européenne

Conformément à la directive européenne nº 2012/19/UE, vous ne devez plus jeter

vos instruments électriques dans les ordures ménagères ordinaires !

La société Tintometer GmbH se charge d’éliminer vos instruments électriques de

façon professionnelle et dans le respect de l’environnement. Ce service, qui ne

comprend pas les frais de transport, est gratuit. Ce service n’est valable que

pour des instruments électriques achetés après le 13 août 2005. Nous vous prions

d’envoyer vos instruments électriques Tintometer usés à vos frais à votre fournisseur.

Belangrijke informatie

Om de kwaliteit van ons leefmilieu te behouden, te verbeteren en te

beschermen is voor landen binnen de Europese Unie de Europese richtlijn

2012/19/EU voor het verwijderen van elektronische apparatuur opgesteld.

Volgens deze richtlijn mag elektronische apparatuur niet met het huishoudelijk afval

worden afgevoerd.

Tintometer GmbH verwijdert uw elektronisch apparaat op een professionele en

milieubewuste wijze. Deze service is, exclusief de verzendkosten, gratis en alleen geldig voor elektrische apparatuur die na 13 augustus 2005 is gekocht. Stuur uw te

verwijderen Tintometer apparatuur franco aan uw leverancier.

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Información Importante

Para preservar, proteger y mejorar la calidad del medio ambiente

Eliminación de equipos eléctricos en la Unión Europea

Con motivo de la Directiva Europea 2012/19/UE, ¡ningún instrumento eléctrico

deberá eliminarse junto con los residuos domésticos diarios!

Tintometer GmbH se encargará de dichos instrumentos eléctricos de una manera

profesional y sin dañar el medio ambiente. Este servicio, el cual escluye los gastos de transporte, es gratis y se aplicará únicamente a aquellos instrumentos eléctricos

adquiridos después del 13 de agosto de 2005. Se ruega enviar aquellos instrumentos

eléctricos inservibles de Tintometer a carga pagada a su distribuidor.

Informazioni importanti

Conservare, proteggere e migliorare la qualità dell’ambiente

Smaltimento di apparecchiature elettriche nell’Unione Europea

In base alla Direttiva europea 2012/19/UE, gli apparecchi elettrici non devono essere

smaltiti insieme ai normali riﬁuti domestici!

Tintometer GmbH provvederà a smaltire i vostri apparecchi elettrici in maniera

professionale e responsabile verso l’ambiente. Questo servizio, escluso il trasporto,

è completamente gratuito. Il servizio si applica agli apparecchi elettrici acquistati

successivamente al 13 agosto 2005. Siete pregati di inviare gli apparecchi elettrici

Tintometer divenuti inutilizzabili a trasporto pagato al vostro rivenditore.

Informação Importante

Para Preservar, Proteger e Melhorar a Qualidade do Ambiente

Remoção de Equipamento Eléctrico na União Europeia

Devido à Directiva Europeia 2012/19/UE, o seu equipamento eléctrico naõ deve ser

removido com o lixo doméstico habitual!

A Tintometer GmbH tratará da remoção do seu equipamento eléctrico de forma

proﬁssional e responsável em termos ambientais. Este serviço, não incluindo

os custos de transporte, é gratuito. Este serviço só é aplicável no caso de

equipamentos eléctricos comprados depois de 13 de Agosto de 2005. Por favor,

envie os seus equipamentos eléctricos Tintometer que devem ser removidos ao seu

fornecedor (transporte pago).

Istotna informacja

Dla zachowania, ochrony oraz poprawy naszego środowiska

Usuwanie urządzeń elektronicznych w Unii Europejskiej

Na podstawie Dyrektywy Parlamentu Europejskiego 2012/19/UE nie jest

dozwolone usuwanie zakupionych przez Państwo urządzeń elektronicznych wraz z

normalnymi odpadami z gospodarstwa domowego!

Tintometer GmbH usunie urządzenia elektrycznego Państwa w sposób

profesjonalny i odpowiedzialny z punktu widzenia środowiska. Serwis ten jest,

za wyjątkiem kosztów transportu, bezpłatny. Serwis ten odnosi się wyłącznie do

urządzeń elektrycznych zakupionych po 13.08.2005r. Przeznaczone do usunięcia

urządzenia rmy Tintometer mogą Państwo przesyłać na koszt własny do swojego

dostawcy.

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Wichtiger Entsorgungshinweis zu Batterien und Akkus

Jeder Verbraucher ist aufgrund der Batterieverordnung (Richtlinie 2006/66/

EG) gesetzlich zur Rückgabe aller ge- und verbrauchten Batterien bzw. Akkus

verpﬂichtet. Die Entsorgung über den Hausmüll ist verboten. Da auch bei Produkten

aus unserem Sortiment Batterien und Akkus im Lieferumgang enthalten sind, weisen

wir Sie auf folgendes hin:

Verbrauchte Batterien und Akkus gehören nicht in den Hausmüll, sondern können

unentgeltlich bei den öffentlichen Sammelstellen Ihrer Gemeinde und überall

dort abgegeben werden, wo Batterien und Akkus der betreffenden Art verkauft

werden. Weiterhin besteht für den Endverbraucher die Möglichkeit, Batterien und

Akkus an den Händler, bei dem sie erworben wurden, zurückzugeben (gesetzliche

Rücknahmepﬂicht).

Important disposal instructions for batteries and accumulators

EC Guideline 2006/66/EC requires users to return all used and worn-out batteries

and accumulators. They must not be disposed of in normal domestic waste. Because

our products include batteries and accumulators in the delivery package our advice is

as follows :

Used batteries and accumulators are not items of domestic waste. They must be

disposed of in a proper manner. Your local authority may have a disposal facility;

alternatively you can hand them in at any shop selling batteries and accumulators.

You can also return them to the company which supplied them to you; the company

is obliged to accept them.

Information importante pour l'élimination des piles et des accumulateurs

En vertu de la Directive européenne 2006/66/CE relative aux piles et accumulateurs,

chaque utilisateur est tenu de restituer toutes les piles et tous les accumulateurs

utilisés et épuisés. L'élimination avec les déchets ménagers est interdite. Etant donné

que l'étendue de livraison des produits de notre gamme contient également des piles

et des accumulateurs, nous vous signalons ce qui suit :

les piles et les accumulateurs utilisés ne sont pas des ordures ménagères, ils peuvent

être remis sans frais aux points de collecte publics de votre municipalité et partout où sont vendus des piles et accumulateurs du type concerné. Par ailleurs, l'utilisateur ﬁnal a la possibilité de remettre les piles et les accumulateurs au commerçant auprès

duquel ils ont été achetés (obligation de reprise légale).

Belangrijke mededeling omtrent afvoer van batterijen en accu’s

Ledere verbruiker is op basis van de richtlijn 2006/66/EG verplicht om alle gebruikte

batterijen en accu’s in te leveren. Het is verboden deze af te voeren via het huisvuil.

Aangezien ook onze producten geleverd worden met batterijen en accu’s wijzen wij

u op het volgende; Lege batterijen en accu’s horen niet in het huisvuil thuis. Men

kan deze inleveren bij inzamelpunten van uw gemeente of overal daar waar deze

verkocht worden. Tevens bestaat de mogelijkheid batterijen en accu’s daar in te

leveren waar u ze gekocht heeft. (wettelijke terugnameplicht)

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Indicación importante acerca de la eliminación de pilas y acumuladores

Basado en la norma relativa a pilas/ baterías (directiva 2006/66/CE), cada consumidor,

está obligado por ley, a la devolución de todas las pilas/ baterías y acumuladores usados y

consumidos. Está prohibida la eliminación en la basura doméstica. Ya que en productos de

nuestra gama, también se incluyen en el suministro pilas y acumuladores, le sugerimos lo

Las pilas y acumuladores usados no pertenecen a la basura doméstica, sino que pueden

ser entregados en forma gratuita en cada uno de los puntos de recolección públicos de su

comunidad en los cuales se vendan pilas y acumuladores del tipo respectivo. Además, para

el consumidor ﬁnal existe la posibilidad de devolver las pilas y baterías recargables a los

distribuidores donde se hayan adquirido (obligación legal de devolución).

Indicazioni importanti sullo smaltimento di pile e accumulatori

In base alla normativa concernente le batterie (Direttiva 2006/66/CE) ogni consumatore

è tenuto per legge alla restituzione di tutte le batterie o accumulatori usati ed esauriti. È

vietato lo smaltimento con i riﬁuti domestici. Dato che anche alcuni prodotti del nostro assortimento sono provvisti di pile e accumulatori, vi diamo di seguito delle indicazioni:

Pile e accumulatori esauriti non vanno smaltiti insieme ai riﬁuti domestici, ma depositati

gratuitamente nei punti di raccolta del proprio comune o nei punti vendita di pile e

accumulatori dello stesso tipo. Inoltre il consumatore ﬁnale può portare batterie e

accumulatori al rivenditore presso il quale li ha acquistati (obbligo di raccolta previsto per

legge).

Instruções importantes para a eliminação residual de pilhas e acumuladores

Os utilizadores ﬁnais são legalmente responsáveis, nos termos do Regulamento relativo

a pilhas e acumuladores (Directiva 2006/66/CE), pela entrega de todas as pilhas e

acumuladores usados e gastos. É proibida a sua eliminação juntamente com o lixo

doméstico. Uma vez que determinados produtos da nossa gama contêm pilhas e/ou

acumuladores, alertamos para os seguintes aspectos:

As pilhas e acumuladores usados não podem ser eliminados com o lixo doméstico, devendo sim ser entregues, sem encargos, junto dos pontos de recolha públicos do seu município, ou em qualquer ponto de venda de pilhas e acumuladores. O utilizador ﬁnal

dispõe ainda da possibilidade de entregar as pilhas e/ou acumuladores no estabelecimento

comerciante onde os adquiriu (dever legal de aceitar a devolução).

Istotna wskazówka dotycząca utylizacji baterii i akumulatorów

Każdy użytkownik na mocy rozporządzenia w sprawie baterii (wytyczna 2006/66/WE)

jest ustawowo zobowiązany do oddawania wszystkich rozładowanych i zużytych baterii

lub akumulatorów. Utylizacja wraz z odpadkami domowymi jest zabroniona. Ponieważ

także w produktach z naszego asortymentu zawarte są w zakresie dostawy baterie i

akumulatory, zwracamy uwagę na poniższe zasady:

zużyte baterie i akumulatory nie mogą być wyrzucane wraz z odpadkami domowymi,

lecz powinny być bezpłatnie przekazywane w publicznych miejscach zbiórki

wyznaczonych przez gminę lub oddawane w punktach, gdzie sprzedawane są baterie i

akumulatory danego rodzaju. Poza tym użytkownik końcowy ma możliwość zwrócenia baterii i akumulatorów do przedstawiciela handlowego, u którego je nabył (ustawowy

obowiązek przyjęcia).

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Safety precautions

CAUTION

Reagents are formulated exclusively for chemical analysis and must not be used for

any other purpose. Reagents must not get into the hands of children. Some of the

reagents contain substances which are not entirely harmless environmentally. Be

aware of the ingredients and take proper care when disposing of the test solution.

CAUTION

Please read this instruction manual before unpacking, setting up or using the

photometer. Please read the method description completely before performing

the test. Be aware of the risks of using the required reagents by reading the MSDS

(Material Safety Data Sheets). Failure could result in serious injury to the operator or

damage to the instrument.

MSDS: www.lovibond.com

CAUTION

The accuracy of the instrument is only valid if the instrument is used in an

environment with controlled electromagnetic disturbances according to DIN 61326.

Wireless devices, e.g. wireless phones, must not be used near the instrument.

Revision_4c 07/2015

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PM620_4c 07/2015

Table of contents

Part 1 Methods ................................................................................................... 7

1.1 Table of Methods ..................................................................................................... 8

Acid demand to pH 4.3 ................................................................................................... 12

Alkalinity-total (Alkalinity-m, m-Value) ............................................................................. 14

Alkalinity-total HR (Alkalinity-m HR, m-Value HR) ............................................................ 16

Aluminium with tablets ................................................................................................... 18

Aluminium (powder pack) ............................................................................................... 20

Ammonia with tablet ...................................................................................................... 22

Bromine .......................................................................................................................... 24

Chlorine .......................................................................................................................... 26

Chlorine with tablet ........................................................................................................ 28

free Chlorine ............................................................................................................... 28

total Chlorine .............................................................................................................. 29

differentiated determination (free, combined, total) .................................................... 30

Chlorine HR with tablet ................................................................................................... 32

free Chlorine ............................................................................................................... 32

total Chlorine .............................................................................................................. 33

differentiated determination (free, combined, total) .................................................... 34

Chlorine with liquid reagent ............................................................................................ 36

free Chlorine ............................................................................................................... 36

total Chlorine .............................................................................................................. 37

differentiated determination (free, combined, total) .................................................... 38

Chlorine (powder pack) ................................................................................................... 40

free Chlorine ............................................................................................................... 40

total Chlorine .............................................................................................................. 41

differentiated determination (free, combined, total) .................................................... 42

Chlorine HR (powder pack) ............................................................................................. 44

free Chlorine ............................................................................................................... 44

total Chlorine .............................................................................................................. 45

differentiated determination (free, combined, total) .................................................... 46

Chlorine dioxide .............................................................................................................. 48

in presence of Chlorine ............................................................................................... 50

in absence of Chlorine ................................................................................................ 53

Chlorite in presence of Chlorine and Chlorine dioxide ..................................................... 54

Copper with tablet .......................................................................................................... 58

differentiated determination (free, combined, total) .................................................... 59

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free Copper ................................................................................................................ 60

total Copper ............................................................................................................... 61

Copper (powder pack) .................................................................................................... 62

CyA-TEST (Cyanuric acid) ................................................................................................ 64

H2O2 HR with liquid reagent (16 mm Ø) .......................................................................... 66

Hardness, Calcium with Calcio tablet .............................................................................. 68

Hardness, total ................................................................................................................ 70

Hardness, total HR .......................................................................................................... 72

Iodine ............................................................................................................................. 74

Iron with tablet ............................................................................................................... 76

Oxygen, active ................................................................................................................ 78

Ozone ............................................................................................................................. 80

in presence of Chlorine ............................................................................................... 82

in absence of Chlorine ................................................................................................ 84

PHMB (Biguanide) ........................................................................................................... 86

Phosphate, ortho LR with tablet ...................................................................................... 88

pH value LR with tablet ................................................................................................... 90

pH value with tablet ........................................................................................................ 92

pH value with liquid reagent ........................................................................................... 94

pH value HR with tablet .................................................................................................. 96

Sodium hypochlorite ....................................................................................................... 98

Sulfate with tablet ........................................................................................................ 100

Sulfate (powder pack) ................................................................................................... 102

Urea ............................................................................................................................. 104

1.2 Important notes ......................................................................................... 106

1.2.1 Correct use of reagents ................................................................................ 106

1.2.2 Cleaning of vials and accessories for analysis ................................................ 107

1.2.3 Guidelines for photometric measurements ................................................... 107

1.2.4 Sample dilution techniques ........................................................................... 109

1.2.5 Correcting for volume additions ................................................................... 109

Part 2 Instrument Manual ....................................................................... 111

2.1 Operation ................................................................................................... 112

2.1.1 Set up .......................................................................................................... 112

2.1.2 Saving data – Important Notes ..................................................................... 112

2.1.3 Replacement of batteries .............................................................................. 112

2.1.4 Instrument (explosion drawing) .................................................................... 113

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2.2 Overview of function keys ....................................................................... 115

2.2.1 Overview ...................................................................................................... 115

2.2.2 Displaying time and date .............................................................................. 116

2.2.3 User countdown ........................................................................................... 116

2.2.4 Display backlight .......................................................................................... 116

2.3 Operation mode ........................................................................................ 117

2.3.1 Automatic switch off .................................................................................... 117

2.3.2 Selecting a method ...................................................................................... 117

2.3.2.1 Method Information (F1) .............................................................................. 117

2.3.2.2 Chemical Species Information ....................................................................... 118

2.3.3 Differentiation .............................................................................................. 118

2.3.4 Performing Zero ........................................................................................... 118

2.3.5 Performing Tests ........................................................................................... 119

2.3.6 Ensuring reaction periods (countdown) ......................................................... 119

2.3.7 Changing chemical species ........................................................................... 120

2.3.8 Storing results .............................................................................................. 120

2.3.9 Printing results (Infra-Red Interface Module) (optional) .................................. 121

2.3.10 Perform additional measurements ................................................................ 121

2.3.11 Selecting a new method ............................................................................... 122

2.3.12 Measure absorbance .................................................................................... 122

2.4 Photometer settings: Table of Mode Functions ...................................... 123

2.4.1 blank because of technical requirements ...................................................... 124

2.4.2 Instrument basic settings 1 ........................................................................... 124

2.4.3 Printing of stored results ............................................................................... 128

2.4.4 Recall / delete stored results.......................................................................... 133

2.4.5 Calibration ................................................................................................... 138

2.4.6 Lab function ................................................................................................. 144

Proﬁ-Mode ................................................................................................... 144

One Time Zero ............................................................................................. 145

2.4.7 User operations ............................................................................................ 146

User method list ........................................................................................... 146

User Concentration Methods ........................................................................ 148

User Polynomials .......................................................................................... 150

Delete User Methods .................................................................................... 153

Print Data of User Methods .......................................................................... 154

Initialise User Method System ....................................................................... 155

2.4.8 Special functions .......................................................................................... 156

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Langelier Saturation Index ............................................................................ 156

2.4.9 Instrument basic settings 2 ........................................................................... 158

2.4.10 Instrument special functions /service ............................................................. 159

2.5 Data transfer .............................................................................................. 160

2.5.1 Data Printing ................................................................................................ 160

2.5.2 Data transfer to a personal computer ........................................................... 160

2.5.3 Internet Updates .......................................................................................... 160

Part 3 Enclosure .............................................................................................. 161

3.1 Unpacking .................................................................................................. 162

3.2 Delivery contents ...................................................................................... 162

3.3 blank because of technical requirements ................................................ 162

3.4 Technical data ............................................................................................ 163

3.5 Abbreviations ............................................................................................ 164

3.6 Troubleshooting ........................................................................................ 165

3.6.1 Operating messages in the display / error display .......................................... 165

3.6.2 General ........................................................................................................ 167

3.7 Declaration of CE-Conformity .................................................................. 168

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Part 1

Methods

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1.1 Table of Methods

* = free, combined, total; PP = powder pack; T = tablet; L = liquid; TT = tube test; LR = low range; MR = middle range; HR = high range;

No. Analysis Reagent Range Displayed asMethod

[nm]

OTZ Page

20 Acid demand to

pH 4.3 T

tablet 0.1-4 mmol/l

Acid/Indicator

1,2,5

610 12

Alkalinity, total T

tablet 5-200 mg/l CaCO3Acid/Indicator

1,2,5

610 14

Alkalinity HR, total T

tablet 5-500 mg/l CaCO3Acid/Indicator

1,2,5

610 16

40 Aluminium T tablet 0.01-0.3 mg/l Al Eriochrome

Cyanine R

530 18

50 Aluminium PP PP + liquid 0.01-

0.25

mg/l Al Eriochrome

Cyanine R

530 – 20

60 Ammonia T tablet 0.02-1 mg/l N

Indophenol blue

2,3

610 22

80 Bromine T tablet 0.05-13 mg/l Br

DPD

530 24

100 Chlorine T * tablet 0.01-6 mg/l Cl

DPD

1,2,3

530 26, 28

103 Chlorine HR T * tablet 0.1-10 mg/l Cl

DPD

1,2,3

530 26, 32

101 Chlorine L * liquid 0.02-4 mg/l Cl

DPD

1,2,3

530 26, 36

110 Chlorine PP * PP 0.02-2 mg/l Cl

DPD

1,2

530 26, 40

111 Chlorine HR PP * PP 0.1-8 mg/l Cl

DPD

1,2

530

–

26, 44

120 Chlorine dioxide T tablet 0.02-11 mg/l ClO

DPD, Glycine

1,2

530 48

150 Copper T * tablet 0.05-5 mg/l Cu Biquinoline

560 58

153 Copper PP PP 0.05-5 mg/l Cu Bicinchoninate 560 62

160

CyA-TEST T

tablet 0-160 mg/l CyA Melamine 530 64

214 H2O2 HR L liquid 40-500 mg/l H2O2Titanium

tetrachloride/acid

530

–

191 Hardness, Calcium 2Ttablet 0-500 mg/l CaCO3Murexide

560 68

200

Hardness, total T

tablet 2-50 mg/l CaCO3Metallphthalein 3560 70

201 Hardness, total

HR T

tablet 20-500 mg/l CaCO3Metallphthalein 3560 72

215 Iodine T tablet 0.05-3.6 mg/l I DPD

530 74

220 Iron T tablet 0.02-1 mg/l Fe PPST

560

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1.1 Table of Methods

* = free, combined, total; PP = powder pack; T = tablet; L = liquid; TT = tube test; LR = low range; MR = middle range; HR = high range;

No. Analysis Reagent Range Displayed asMethod

[nm]

OTZ Page

290

Oxygen, active T

tablet 0.1-10 mg/l O

DPD 530 78

300

Ozone (DPD) T

tablet 0.02-2 mg/l O

DPD/Glycine

530 80

70 PHMB T tablet 2-60 mg/l PHMB Buffer/Indicator 560 86

319 Phosphate, T

ortho LR

tablet 0.05-4 mg/l PO

Ammoniummolybdate

2,3

660 88

329

pH-Value LR T

tablet 5.2-6.8 —

Bromocresolpurple5560 90

330 pH-Value T tablet 6.5-8.4 — Phenolred

560 92

331 pH-Value L liquid 6.5-8.4 — Phenolred

560 94

332

pH-Value HR T

tablet 8.0-9.6 — Thymolblue

560 96

212 Sodium

hypochlorite T

tablet 0.2-16 % NaOCl Potassium

iodide

530 98

355 Sulfate T tablet 5-100 mg/l SO

BariumsulfateTurbidity

610 100

360 Sulfate PP PP 5-100 mg/l SO

BariumsulfateTurbidity

530 102

390 Urea T tablet +

liquid

0.1-2.5 mg/l Urea Indophenol/ Urease

610 104

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1.1 Methods

The precision of Lovibond® Reagent Systems (tablets, powder packs and tube tests) is identical to the precision speciﬁed in standards literature such as American Standards (AWWA), ISO etc.

Most of the data referred to in these standard methods relates to Standard Solutions. Therefore they are not readily applicable to drinking-, boiler- or waste-water, since various interferences can have a major inﬂuence on the accuracy of the method. For this reason we don’t state such potentially misleading data.

Due to the fact that each sample is different, the only way to check the tolerances (‘precision’) is the Standard Additions Method.

According to this method, ﬁrst the original sample is tested. Then further samples (2 to 4) are taken and small amounts of a Standard Solution are added, and further results are obtained. The amounts added range from approximately half, up to double the amount present in the sample itself.

These supplementary results make it possible to estimate the actual concentration of the original sample by comparison.

Literature

The reagent formulations are based on internationally recognised test methods. Some are described in national and/or international guidelines.

1. Deutsche Einheitsverfahren zur Wasser-, Abwasser- und Schlammuntersuchung

2. Standard Methods for the Examination of Water and Wastewater; 18th Edition, 1992

3. Photometrische Analysenverfahren, Schwedt, Wissenschaftliche Verlagsgesellschaft mbH, Stuttgart 1989

4. Photometrische Analyse, Lange / Vejdelek, Verlag Chemie 1980

5. Colorimetric Chemical Analytical Methods, 9th Edition, London

Notes for searching:

OTZ (OneTimeZero) switching on and off, see Mode 55, page 145

Active Oxygen -> Oxygen, activ Alkalinity-m -> Alkalinity, total Biguanide -> PHMB Calcium Hardness -> Hardness, Calcium Cyanuric acid -> CyA-TEST H2O2 -> Hydrogen peroxide Total Hardness -> Hardness, total m-Value -> Alkalinity, total total Alkalinity -> Alkalinity, total total Hardness -> Hardness, total

Langelier Saturation -> Mode function 70 Index (Water Balance)

Page 19

PM620_4c 07/2015

Page 20

PM620_4c 07/2015

1.1 Methods

Acid demand to pH 4.3 with Tablet

0.1 – 4 mmol/l

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one ALKA-M-PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display as Acid demand to pH 4.3 in mmol/l.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 21

PM620_4c 07/2015

1.1 Methods

Notes:

1. The terms total Alkalinity, Alkalinity-m, m-Value and Acid demand to pH 4.3 are identical.

2. For accurate results exactly 10 ml of water sample must be taken for the test.

Reagent Form of reagent/Quantity Order-No.

ALKA-M-PHOTOMETER Tablet / 100 513210BT

Page 22

PM620_4c 07/2015

1.1 Methods

Alkalinity, total = Alkalinity-m = m-Value with Tablet

5 – 200 mg/l CaCO

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one ALKA-M-PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display as total Alkalinity.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 23

PM620_4c 07/2015

1.1 Methods

Notes:

1. The terms total Alkalinity, Alkalinity-m, m-Value and Alkalinity to pH 4.3 are identical.

2. For accurate results exactly 10 ml of water sample must be taken for the test.

3. Conversion table:

Acid demand to pH 4.3

DIN 38 409 (KS 4.3)

German

°dH*

English

°eH*

French

°fH*

1 mg/l CaCO

0.02 0.056 0.07 0.1

*Carbonate hardness (reference = Hydrogencarbonate-anions) Example: 10 mg/l CaCO3 = 10 mg/l x 0.056 = 0.56 °dH 10 mg/l CaCO3 = 10 mg/l x 0.02 = 0.2 mmol/l

4. CaCO3 °dH °eH °fH

°aH

Reagent Form of reagent/Quantity Order-No.

ALKA-M-PHOTOMETER Tablet / 100 513210BT

Page 24

PM620_4c 07/2015

1.1 Methods

Alkalinity HR, total = Alkalinity-m HR = m-Value HR with Tablet

5 – 500 mg/l CaCO

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one ALKA-M-HR PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Press [ ] key.

Wait for a reaction period of 1 minute.

8. Remix the solution.

9. Place the vial in the sample chamber making sure that the marks are aligned.

10. Press TEST key.

The result is shown in the display as total Alkalinity.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 1:00 start:

Page 25

PM620_4c 07/2015

1.1 Methods

Notes:

1. For veriﬁcation of the result look carefully at the bottom of the vial. If a thin yellow layer forms, then mix the vial again. This ensures that reaction is complete. Reread the result.

2. Conversion table:

Acid demand to pH 4.3

DIN 38 409 (KS 4.3)

German

°dH*

English

°eH*

French

°fH*

1 mg/l CaCO

0.02 0.056 0.07 0.1

*Carbonate hardness (reference = Hydrogencarbonate-anions) Example: 10 mg/l CaCO3 = 10 mg/l x 0.056 = 0.56 °dH 10 mg/l CaCO3 = 10 mg/l x 0.02 = 0.2 mmol/l

3. CaCO3 °dH °eH °fH

°aH

Reagent Form of reagent/Quantity Order-No.

ALKA-M-HR PHOTOMETER Tablet / 100 513240BT

Page 26

PM620_4c 07/2015

1.1 Methods

Aluminium with Tablet

0.01 – 0.3 mg/l Al

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one ALUMINIUM No. 1 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod (dissolve the tablet).

6. Add one ALUMINIUM No. 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

7. Close the vial tightly with the cap and swirl gently several times until the tablets are dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key. Wait for a reaction period of 5 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in mg/l Aluminium.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 5:00

Page 27

PM620_4c 07/2015

1.1 Methods

Notes:

1. Before use, clean the vials and the accessories with Hydrochloric acid (approx. 20%). Rinse them thoroughly with deionised water.

2. To get accurate results the sample temperature must be between 20°C and 25°C.

3. A low test result may be given in the presence of Fluorides and Polyphosphates. The effect of this is generally insigniﬁcant unless the water has ﬂuoride added artiﬁcially. In this case, the following table should be used:

Fluoride [mg/l F]

Displayed value: Aluminium [mg/l Al]

0.05 0.10 0.15 0.20 0.25 0.30

0.2 0.05 0.11 0.16 0.21 0.27 0.32

0.4 0.06 0.11 0.17 0.23 0.28 0.34

0.6 0.06 0.12 0.18 0.24 0.30 0.37

0.8 0.06 0.13 0.20 0.26 0.32 0.40

1.0 0.07 0.13 0.21 0.28 0.36 0.45

1.5 0.09 0.20 0.29 0.37 0.48 ---

Example: If the result of Aluminium determination is 0.15 mg/l Al and the Fluoride concentration is known to be 0.4 mg/l F, the true concentration of Aluminium is

0.17 mg/l Al.

4. A special tablet ingredient prevents effects on the measurement due to iron and manganese.

5. Al

Al2O

Reagent Form of reagent/Quantity Order-No. Set ALUMINIUM No. 1 / No. 2 Tablet / per 100

inclusive stirring rod

517601BT

ALUMINIUM No. 1 Tablet / 100 515460BT

ALUMINIUM No. 2 Tablet / 100 515470BT

Page 28

PM620_4c 07/2015

1.1 Methods

Aluminium with Vario Powder Pack

0.01 – 0.25 mg/l Al

Use two clean vials (24 mm Ø) and mark one as blank for zeroing.

1. Fill 20 ml of the water sample in a 100 ml beaker.

Add the contents of one Vario Aluminum ECR F20

Powder Pack straight from the foil to the water sample.

3. Dissolve the powder using a clean stirring rod.

4. Press [ ] key. Wait for a reaction period of 30 seconds.

After the reaction period is ﬁnished proceed as follows:

Add

the contents of

one Vario Hexamine F20 Powder

Pack straight

from the foil to the same water sample.

6. Dissolve the powder using a clean stirring rod.

7. Add 1 drop of Vario Aluminum ECR Masking Reagent in the vial marked as blank.

8. Add 10 ml of the prepared water sample to the vial (this is the blank).

9. Add the remaining 10 ml of the prepared water sample in the second clean vial (this is the sample).

10. Close the vials tightly with the caps and swirl several times to mix the contents.

11. Press [ ] key. Wait for a reaction period of 5 minutes.

After the reaction period is ﬁnished proceed as follows:

Countdown 1 0:30 start:

Countdown 2 5:00 start:

1 2

3 4

Page 29

PM620_4c 07/2015

1.1 Methods

12. Place the vial (the blank) in the sample chamber making sure that the marks are aligned.

13. Press ZERO key.

14. Remove the vial from the sample chamber.

15. Place the vial (the sample) in the sample chamber making sure that the marks are aligned.

16. Press TEST key.

The result is shown in the display in mg/l Aluminium.

Notes:

1. Before use, clean the vials and the accessories with Hydrochloric acid (approx. 20%). Rinse them thoroughly with deionised water.

2. To get accurate results the sample temperature must be between 20°C and 25°C.

Fluoride [mg/l F]

Displayed value: Aluminium [mg/l Al]

0.05 0.10 0.15 0.20 0.25 0.30

0.2 0.05 0.11 0.16 0.21 0.27 0.32

0.4 0.06 0.11 0.17 0.23 0.28 0.34

0.6 0.06 0.12 0.18 0.24 0.30 0.37

0.8 0.06 0.13 0.20 0.26 0.32 0.40

1.0 0.07 0.13 0.21 0.28 0.36 0.45

1.5 0.09 0.20 0.29 0.37 0.48 ---

Example: If the result of Aluminium determination is 0.15 mg/l Al and the Fluoride concentration is known to be 0.4 mg/l F, the true concentration of Aluminium is

0.17 mg/l Al.

4. Al

Al2O

Reagent Form of reagent/Quantity Order-No. Set

VARIO Aluminium ECR F20 VARIO Aluminium Hexamine F 20 VARIO Aluminium ECR Masking Reagent

Powder Pack / 100 Powder Pack / 100 Liquid reagent / 25 ml

535000

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 30

PM620_4c 07/2015

1.1 Methods

Ammonia with Tablet

0.02 – 1 mg/l N

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one AMMONIA No. 1 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Add one AMMONIA No. 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

7. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key. Wait for a reaction period of 10 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in mg/l Ammonia as N.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 10:00

Page 31

PM620_4c 07/2015

1.1 Methods

Notes:

1. The tablets must be added in the correct sequence.

2. The AMMONIA No. 1 tablet will only dissolve completely after the AMMONIA No. 2 tablet has been added.

3. The temperature of the sample is important for full colour development. At a temperature below 20°C the reaction period is 15 minutes.

4. Sea water samples: Ammonia conditioning reagent is required when testing sea water or brackish water samples to prevent precipitation of salts. Fill the test tube with the sample to the 10 ml mark and add one level spoonful of Conditioning Powder. Mix to dissolve, then continue as described in the test instructions.

5. Conversion: mg/l NH4 = mg/l N x 1.29 mg/l NH3 = mg/l N x 1.22

6. N NH4

Reagent Form of reagent/Quantity Order-No. Set AMMONIA No. 1 / No. 2 Tablet / per 100

inclusive stirring rod

517611BT

AMMONIA No. 1 Tablet / 100 512580BT

AMMONIA No. 2 Tablet / 100 512590BT

Ammonia conditioning reagent (Sea water samples)

(approx. 100 tests) powder / 15 g

460170

Page 32

PM620_4c 07/2015

1.1 Methods

Bromine with Tablet

0.05 – 13 mg/l Br

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet straight from the foil and crush the tablet using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

The result is shown in the display in mg/l Bromine.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 33

PM620_4c 07/2015

1.1 Methods

Notes:

1. Vial cleaning: As many household cleaners (e.g. dishwasher detergent) contain reducing substances,the subsequent determination of Bromine may show lower results. To avoid any measurement errors, only use glassware free of Chlorine demand. Preparation: Put all applicable glassware into Sodium hypochlorite solution (0.1 g/l) forone hour, then rinse all glassware thoroughly with deionised water.

2. Preparing the sample: When preparing the sample, the lost of Bromine, e.g. by pipetting or shaking, must be avoided. The analysis must take place immediately after taking the sample.

3. The DPD colour development is carried out at a pH value of 6.2 to 6.5. The reagent tablet therefore contains a buffer for the pH adjustment. Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the reagent is added (use 0.5 mol/l Sulfuric acid resp. 1 mol/l Sodium hydroxide).

4. Exceeding the measuring range: Concentrations above 22 mg/l Bromine can lead to results showing 0 mg/l. In this case, the water sample must be diluted with water free of Bromine. 10 ml of the diluted sample should be mixed with the reagent and the measurement repeated.

5. Oxidising agents such as Chlorine, Ozone etc. interfere as they react in the same way as Bromine.

Reagent Form of reagent/Quantity Order-No.

DPD No. 1 Tablet / 100 511050BT

Page 34

PM620_4c 07/2015

1.1 Methods

Chlorine with Tablet

0.01 – 6 mg/l Cl

Chlorine HR with Tablet

0.1 – 10 mg/l Cl

Chlorine with Liquid Reagent

0.02 - 4 mg/l Cl

Chlorine with Vario Powder Pack

0.02 - 2 mg/l Cl

Chlorine HR with Vario Powder Pack

0.1 - 8 mg/l Cl

The following selection is shown in the display:

for the differentiated determination of free, combined and total Chlorine.

for the determination of free Chlorine.

for the determination of total Chlorine.

Select the desired determination with the arrow

keys [ ] and [ ]. Conﬁrm with [ ] key.

Chlorine >> diff free total

>> diff

>> free

>> total

Page 35

PM620_4c 07/2015

1.1 Methods

Notes:

1. Vial cleaning: As many household cleaners (e.g. dishwasher detergent) contain reducing substances, the subsequent determination of Chlorine may show lower results. To avoid any measurement errors, only use glassware free of Chlorine demand. Preparation: Put all applicable glassware into Sodium hypochlorite solution (0.1 g/l) for one hour, then rinse all glassware thoroughly with deionised water.

2. For individual testing of free and total Chlorine, the use of different sets of glassware is recommended (EN ISO 7393-2, 5.3)

3. Preparing the sample: When preparing the sample, the lost of Chlorine, e.g. by pipetting or shaking, must be avoided. The analysis must take place immediately after taking the sample.

4. The DPD colour development is carried out at a pH value of 6.2 to 6.5. The reagents therefore contain a buffer for the pH adjustment. Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the reagent is added (use 0.5 mol/l Sulfuric acid resp. 1 mol/l Sodium hydroxide).

5. Exceeding the measuring range: Concentrations above: 10 mg/l Chlorine using tablets (method 100) 4 mg/l Chlorine using liquid reagents (method 101) 2 mg/l using powder packs (method 110) 8 mg/l using powder packs (method 111) can lead to results showing 0 mg/l. In this case, the water sample must be diluted with water free of Chlorine. 10 ml of the diluted sample should be mixed with the reagent and the measurement repeated.

6. Turbidity (can lead to errors): The use of the DPD No. 1 tablet (method 100) in samples with high Calcium ion contents* and/or high conductivity* can lead to turbidity of the sample and therefore incorrect measurements. In this case, the reagent tablet DPD No. 1 High Calcium should be used as an alternative. If turbidity does occur after the DPD No. 3 tablet has been added, this can be prevented by using the DPD No. 1 High Calcium tablet and the DPD No. 3 High Calcium tablet. The DPD No. 1 High Calcium should only be used in combination with the DPD No.3 High Calcium.

* it is not possible to give exact values, because the development of turbidity depends on the nature of the sample.

7. If ??? is displayed at a differentiated test result see page 166.

8. Oxidizing agents such as Bromine, Ozone etc. interfere as they react in the same way as Chlorine.

Page 36

PM620_4c 07/2015

1.1 Methods

Chlorine, free with Tablet

0.01 – 6 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet straight from the foil and crush the tablet using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

The result is shown in the display in mg/l free Chlo-

rine.

Notes:

See page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 37

PM620_4c 07/2015

1.1 Methods

Chlorine, total with Tablet

0.01 – 6 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet and one DPD No. 3 tablet straight from the foil and crush the tablets using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key. Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in mg/l total Chlorine.

Notes:

See page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 2:00

Page 38

PM620_4c 07/2015

1.1 Methods

Chlorine, differentiated determination with Tablet

0.01 – 6 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water

sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that

the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it,

leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet straight from the foil and

crush the tablet using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times

until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that

the marks are aligned.

9. Press TEST key.

10. Remove the vial from the sample chamber.

11. Add one DPD No. 3 tablet straight from the foil to the

same water sample and crush the tablet using a clean stirring rod.

12. Close the vial tightly with the cap and swirl several times

until the tablet is dissolved.

prepare Zero press ZERO

Zero accepted prepare T1 press TEST

Page 39

PM620_4c 07/2015

1.1 Methods

13. Place the vial in the sample chamber making sure that the marks are aligned.

14. Press TEST key. Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in:

mg/l free Chlorine mg/l combined Chlorine mg/l total Chlorine

Notes: See page 27

Reagent Form of reagent/Quantity Order-No. Set DPD No. 1 / No. 3 Tablet / per 100

inclusive stirring rod

517711BT

DPD No. 1 Tablet / 100 511050BT

DPD No. 3 Tablet / 100 511080BT

Kombi-Pack

DPD No. 1 HIGH CALCIUM / DPD No. 3 HIGH CALCIUM

Tablet / per 100 inclusive stirring rod

517781BT

DPD No. 1 HIGH CALCIUM Tablet / 100 515740BT

DPD No. 3 HIGH CALCIUM Tablet / 100 515730BT

T1 accepted prepare T2 press TEST

Countdown 2:00

*,** mg/l free Cl *,** mg/l comb Cl *,** mg/l total Cl

Page 40

PM620_4c 07/2015

1.1 Methods

Chlorine HR, free with Tablet

0.1 – 10 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 HR tablet straight from the foil and crush the tablet using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

The result is shown in the display in mg/l free Chlo-

rine.

Notes:

See page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 41

PM620_4c 07/2015

1.1 Methods

Chlorine HR, total with Tablet

0.1 – 10 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet and one DPD No. 3 tablet straight from the foil and crush the tablets using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key. Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display in mg/l total Chlo-

rine.

Notes:

See page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 2:00

Page 42

PM620_4c 07/2015

1.1 Methods

Chlorine HR, differentiated determination with Tablet

0.1 – 10 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 HR tablet straight from the foil and crush the tablet using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

10. Remove the vial from the sample chamber.

11. Add one DPD No. 3 HR tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

prepare Zero press ZERO

Zero accepted prepare T1 press TEST

Page 43

PM620_4c 07/2015

1.1 Methods

12. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

13. Place the vial in the sample chamber making sure that the marks are aligned.

14. Press TEST key. Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display in:

mg/l free Chlorine mg/l combined Chlorine mg/l total Chlorine

Notes: See page 27

Reagent Form of reagent/Quantity Order-No.

DPD No. 1 HR Tablet / 100 511500BT

DPD No. 3 HR Tablet / 100 511590BT

T1 accepted prepare T2 press TEST

Countdown 2:00

*,** mg/l free Cl *,** mg/l comb Cl *,** mg/l total Cl

Page 44

PM620_4c 07/2015

1.1 Methods

Chlorine, free with Liquid Reagent

0.02 – 4 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty the vial.

5. Fill the vial with drops of the same size by holding the bottle vertically and squeeze slowly:

6 drops of DPD 1 buffer solution

2 drops of DPD 1 reagent solution

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times to mix the contents.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

The result is shown in the display in mg/l free Chlorine.

Notes (free and total Chlorine):

1. After use replace the bottle caps securely noting the colour coding.

2. Store the reagent bottles in a cool, dry place ideally between 6°C and 10°C.

3. Also see page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 45

PM620_4c 07/2015

1.1 Methods

Chlorine, total with Liquid Reagent

0.02 – 4 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water

sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that

the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty

the vial.

5. Fill the vial with drops of the same size by holding the

bottle vertically and squeeze slowly:

6 drops of DPD 1 buffer solution

2 drops of DPD 1 reagent solution

3 drops of DPD 3 solution

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times

to mix the contents.

8. Place the vial in the sample chamber making sure that

the marks are aligned.

9. Press TEST key.

Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in mg/l total Chlorine.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 2:00

Page 46

PM620_4c 07/2015

1.1 Methods

Chlorine, differentiated determination with Liquid Reagent

0.02 – 4 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty the vial.

5. Fill the vial with drops of the same size by holding the bottle vertically and squeeze slowly:

6 drops of DPD 1 buffer solution

2 drops of DPD 1 reagent solution

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times to mix the contents.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

10. Remove the vial from the sample chamber.

11. Add 3 drops of DPD 3 solution to the same water sample.

12. Close the vial tightly with the cap and swirl several times to mix the contents.

prepare Zero press ZERO

Zero accepted prepare T1 press TEST

Page 47

PM620_4c 07/2015

1.1 Methods

13. Place the vial in the sample chamber making sure that

the marks are aligned.

14. Press TEST key.

Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in:

mg/l free Chlorine mg/l combined Chlorine mg/l total Chlorine

Notes:

1. After use replace the bottle caps securely noting the colour coding.

2. Store the reagent bottles in a cool, dry place ideally between 6°C and 10°C.

3. Also see page 27

Reagent Form of reagent/Quantity Order-No. Set

DPD No. 1 buffer solution DPD No. 1 reagent solution DPD No. 3 solution

(approx. 300 tests) 3 x Liquid reagent / 15 ml 1 x Liquid reagent / 15 ml 2 x Liquid reagent / 15 ml

471056

DPD No. 1 buffer solution Liquid reagent / 15 ml 471010

DPD No. 1 reagent solution Liquid reagent / 15 ml 471020

DPD No. 3 solution Liquid reagent / 15 ml 471030

T1 accepted prepare T2 press TEST

Countdown 2:00

*,** mg/l free Cl *,** mg/l comb. Cl *,** mg/l total Cl

Page 48

PM620_4c 07/2015

1.1 Methods

Chlorine, free with Vario Powder Pack

0.02 – 2 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add the contents of one VARIO Chlorine FREE-DPD / F10 Powder Pack straight from the foil to the water sample.

6. Close the vial tightly with the cap and swirl several times to mix the contents (approx. 20 seconds).

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display in mg/l free Chlorine.

Notes:

See page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

1 2

3 4

Page 49

PM620_4c 07/2015

1.1 Methods

Chlorine, total with Vario Powder Pack

0.02 – 2 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water

sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that

the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add the contents of one VARIO Chlorine TOTAL-DPD /

F10 Powder Pack straight from the foil to the water sample.

6. Close the vial tightly with the cap and swirl several times

to mix the contents (approx. 20 seconds).

7. Place the vial in the sample chamber making sure that

the marks are aligned.

8. Press TEST key.

Wait for a reaction period of 3 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in mg/l total Chlorine.

Notes:

See page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

1 2

3 4

Countdown 3:00

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PM620_4c 07/2015

1.1 Methods

Chlorine, differentiated determination with Vario Powder Pack

0.02 – 2 mg/l Cl

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add the contents of one VARIO Chlorine FREE-DPD/ F10 Powder Pack straight from the foil to the water sample.

6. Close the vial tightly with the cap and swirl several times to mix the contents (approx. 20 seconds).

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

9. Remove the vial from the sample chamber, empty the vial, rinse vial and cap several times and then ﬁll the vial with 10 ml of the water sample.

10. Add the contents of one VARIO Chlorine TOTAL-DPD / F10 Powder Pack straight from the foil to the water sample.

11. Close the vial tightly with the cap and swirl several times to mix the contents (approx. 20 seconds).

prepare Zero press ZERO

Zero accepted prepare T1 press TEST

1 2

3 4

Page 51

PM620_4c 07/2015

1.1 Methods

12. Place the vial in the sample chamber making sure that

the marks are aligned.

13. Press TEST key.

Wait for a reaction period of 3 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in:

mg/l free Chlorine mg/l combined Chlorine mg/l total Chlorine

Notes: See page 27

Reagent Form of reagent/Quantity Order-No.

Vario Clorine Free-DPD/ F10 Powder Pack / 100 530100

VARIO Chlorine Total-DPD/F10 Powder Pack / 100 530120

*,** mg/l free Cl *,** mg/l comb. Cl *,** mg/l total Cl

T1 accepted prepare T2 press TEST

Countdown 3:00

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PM620_4c 07/2015

1.1 Methods

Chlorine HR, free with Vario Powder Pack

plastic vial (type 3) 10 mm

0.1 – 8 mg/l Cl

1. Fill a clean vial (10 mm Ø) with 5 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add the contents of two Vario Chlorine Free-DPD/ F10 Powder Pack straight from the foil into the water sample.

6. Close the vial tightly with the cap and invert several times to mix the contents (20 sec.).

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press the TEST key.

The result is shown in the display in mg/l free Chlo-

rine.

Notes: See page 27

1 2

3 4

10 ml

5 ml

prepare Zero press ZERO

Zero accepted prepare Test press TEST

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PM620_4c 07/2015

1.1 Methods

Chlorine HR, total with Vario Powder Pack

plastic vial (type 3) 10 mm

0.1 – 8 mg/l Cl

1. Fill a clean vial (10 mm Ø) with 5 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add the contents of two Vario Chlorine TOTAL-DPD/ F10 Powder Pack straight from the foil into the water sample.

6. Close the vial tightly with the cap and swirl several times to mix the contents (approx. 20 seconds).

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key. Wait for a reaction period of 3-6 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display in mg/l total Chlo-

rine.

Notes:

See page 27

prepare Zero press ZERO

Zero accepted prepare Test press TEST

1 2

3 4

Countdown 3:00

10 ml

5 ml

Page 54

PM620_4c 07/2015

1.1 Methods

Chlorine HR, differentiated determination with Vario Powder Pack

plastic vial (type 3) 10 mm

0.1 – 8 mg/l Cl

1. Fill a clean vial (10 mm Ø) with 5 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add the contents of two Vario Chlorine Free-DPD/ F10 Powder Pack straight from the foil into the water sample.

6. Close the vial tightly with the cap and invert several times to mix the contents (20 sec.).

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press the TEST key.

9. Remove the vial from the sample chamber, empty the vial, rinse vial and cap several times and then ﬁll the vial with 5 ml of the water sample.

10. Add the contents of two Vario Chlorine TOTAL-DPD/ F10 Powder Pack straight from the foil into the water sample.

1 2

3 4

10 ml

5 ml

prepare Zero press ZERO

Zero accepted prepare T1 press TEST

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PM620_4c 07/2015

1.1 Methods

11. Close the vial tightly with the cap and invert several times to mix the contents (20 sec.).

12. Place the vial in the sample chamber making sure that the marks are aligned.

13. Press TEST key.

Wait for a reaction period of 3 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display in:

mg/l free Chlorine mg/l combined Chlorine mg/l total Chlorine

Notes: See page 27

Reagent Form of reagent/Quantity Order-No.

Vario Clorine Free-DPD/ F10 Powder Pack / 100 530100

VARIO Chlorine Total-DPD/F10 Powder Pack / 100 530120

*,** mg/l free Cl *,** mg/l comb. Cl *,** mg/l total Cl

T1 accepted prepare T2 press TEST

Countdown 3:00

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PM620_4c 07/2015

1.1 Methods

Chlorine dioxide with Tablet

0.02 – 11 mg/l ClO

The following selection is shown in the display:

for the determination of Chlorine dioxide in the presence of Chlorine.

for the determination of Chlorine dioxide in the absence of Chlorine.

Select the desired determination with the arrow keys [ ] and [ ]. Conﬁrm with [ ] key.

Chlorine dioxide >> with Cl without Cl

>> with Cl

>> without Cl

Page 57

PM620_4c 07/2015

1.1 Methods

Notes:

1. Vial cleaning: As many household cleaners (e.g. dishwasher detergent) contain reducing substances, the subsequent determination of Chlorine dioxide may show lower results. To avoid any measurement errors, only use glassware free of Chlorine demand. Preparation: Put all applicable glassware into Sodium hypochlorite solution (0.1 g/l) for one hour, then rinse all glassware thoroughly with deionised water.

2. Preparing the sample: When preparing the sample, the lost of Chlorine dioxide, e.g. by pipetting or shaking, must be avoided. The analysis must take place immediately after taking the sample.

3. The DPD colour development is carried out at a pH value of 6.2 to 6.5. The reagent tablet therefore contains a buffer for the pH adjustment. Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the tablet is added (use 0.5 mol/l Sulfuric acid resp. 1 mol/l Sodium hydroxide).

4. Exceeding the measuring range: Concentrations above 19 mg/l Chlorine dioxide can lead to results showing 0 mg/l. In this case, the water sample must be diluted with water free of Chlorine dioxide. 10 ml of the diluted sample should be mixed with the reagent and the measurement repeated.

5. If ??? is displayed at a differentiated test result see page 166.

6. Oxidising agents such as Chlorine, Ozone etc. interfere as they react in the same way as Chlorine dioxide.

Page 58

PM620_4c 07/2015

1.1 Methods

Chlorine dioxide in the presence of Chlorine with Tablet

0.02 – 11 mg/l ClO

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample.

2. Add one GLYCINE tablet straight from the foil and crush the tablet using a clean stirring rod.

3. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

Fill a second clean vial with 10 ml of water sample

and

close tightly with the cap

5. Place the vial in the sample chamber making sure that the marks are aligned.

6. Press ZERO key.

Remove the vial from the sample chamber and empty

the vial

8. Add one DPD No. 1 tablet straight from the foil and crush the tablet using a clean stirring rod.

9. Transfer the contents of the ﬁrst vial (Glycine solu-

tion) into the prepared vial (point 8).

10. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

11. Place the vial in the sample chamber making sure that the marks are aligned.

12. Press TEST key.

Zero accepted prepare T1 press TEST

prepare Zero press ZERO

2 0

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PM620_4c 07/2015

1.1 Methods

13. Remove the vial from the sample chamber, empty the vial, rinse vial and cap several times. Fill with a few drops of water sample.

14. Add one DPD No. 1 tablet straight from the foil and crush the tablet using a clean stirring rod.

15. Add water sample to the 10 ml mark.

16. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

17. Place the vial in the sample chamber making sure that the marks are aligned.

18. Press TEST key.

19. Remove the vial from the sample chamber.

20. Add one DPD No. 3 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

21. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

22. Place the vial in the sample chamber making sure that the marks are aligned.

23. Press TEST key. Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in:

as Chlorine dioxide in mg/l ClO2.

mg/l free Chlorine mg/l combined Chlorine mg/l total Chlorine

Notes:

See next page.

T1 accepted prepare T2 press TEST

Countdown 2:00

T2 accepted prepare T3 press TEST

*,** mg/l free Cl *,** mg/l comb. Cl *,** mg/l total Cl

*,** mg/l ClO

Page 60

PM620_4c 07/2015

1.1 Methods

Notes: (Chlorine dioxide in the presence of Chlorine)

1. The conversion factor to convert Chlorine dioxide (display) to Chlorine dioxide as Chlorine units is 2.6315. mg/l ClO2 [Cl] = mg/l ClO2 · 2.6315 Chlorine dioxide displayed as Chlorine units ClO2 [Cl] has its origin in swimming poolwater treatment according to DIN 19643.

2. The total Chlorine result given includes the contribution of the chlorine dioxide as Chlorine units reading. For true Chlorine value add the free and combined Chlorine values.

3. See also page 49.

Reagent Form of reagent/Quantity Order-No.

DPD No. 1 Tablet / 100 511050BT

DPD No. 3 Tablet / 100 511080BT

GLYCINE Tablet / 100 512170BT

Page 61

PM620_4c 07/2015

1.1 Methods

Chlorine dioxide in absence of Chlorine with Tablet

0.02 – 11 mg/l ClO

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet straight from the foil and crush the tablet using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

The result is shown in the display

as Chlorine dioxide in mg/l ClO2.

Notes:

See page 49

prepare Zero press ZERO

Zero accepted prepare Test press TEST

*,** mg/l ClO2

Page 62

PM620_4c 07/2015

1.1 Methods

Chlorite in presence of Chlorine and Chlorine dioxide

0,01 – 6 mg/l Cl

Firstly, the glycine method is used to measure the concentration of Chlorine Dioxide. This is then followed by the determination of the free and total chlorine, from which the Combined Chlorine can be calculated. A third test is performed which measures the Total Chlorine concentration plus any Chlorite present. Finally, the Chlorite concentration can be calculated from the three recorded results.

The following selection is shown in the display:

select for the determination of free Chlorine.

1. Fill a clean vial with 10 ml of water sample.

2. Add one GLYCINE tablet straight from the foil to the

water sample and crush the tablet using a clean stirring rod.

3. Close the vial tightly with the cap and swirl gently several times until the tablet is dissolved.

4. Fill a second clean vial with 10 ml of water sample, close tightly with the cap.

5. Place the vial in the sample chamber making sure that the marks are aligned.

6. Press ZERO key.

7. Remove the vial from the sample chamber and

empty the vial.

8. Add one DPD No. 1 tablet straight from the foil and crush the tablet using a clean stirring rod.

0 0

>> free

Chlorine >> diff free total

prepare Zero press ZERO

Page 63

PM620_4c 07/2015

1.1 Methods

9. Transfer the contents of the ﬁrst vial (Glycine solution) into the prepared vial (point 8).

10. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

11. Place the vial in the sample chamber making sure that the marks are aligned.

12. Press TEST key.

Record the displayed test result (G).

13. Remove the vial from the sample chamber, empty the vial, rinse vial and cap several times. Fill with a few drops of water sample.

14. Add one DPD No. 1 tablet straight from the foil and crush the tablet using a clean stirring rod.

15. Add water sample to the 10 ml mark.

16. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

17. Place the vial in the sample chamber making sure that the marks are aligned.

18. Press TEST key.

Record the displayed test result (A).

19. Remove the vial from the sample chamber.

20. Add one DPD No. 3 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

Zero accepted prepare Test press TEST

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PM620_4c 07/2015

1.1 Methods

21. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

22. Place the vial in the sample chamber making sure that the marks are aligned.

23. Wait for a reaction period of 2 minutes.

24. Press TEST key.

Record the displayed test result (C).

25. Remove the vial from the sample chamber.

26. Add one DPD ACIDIFYING tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

27. Wait for a reaction period of 2 minutes.

28. Add one DPD NEUTRALISING tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

29. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

30. Place the vial in the sample chamber making sure that the marks are aligned.

31. Press TEST key.

Record the displayed test result (D).

Zero accepted prepare Test press TEST

Page 65

PM620_4c 07/2015

1.1 Methods

Calculations:

mg/l Chlorine dioxide = result G x 1,9 mg/l free Chlorine = result A – result G mg/l combined Chlorine = result C – result A mg/l Chlorite = result D – ( result C + 4 x result G )

Tolerances:

1. By calculation of non direct analysable parameters it is necessary to consider the error propagation besed on the possible tolerances of the single test tesults.

2. see Notes Chlorine

Reagent Form of reagent/Quantity Order-No. Set DPD No. 1 / No. 3 Tablet / per 100

inclusive stirring rod

517711BT

DPD No. 1 Tablet / 100 511050BT

DPD No. 3 Tablet / 100 511080BT

GLYCINE Tablet / 100 512170BT

DPD ACIDIFYING Tablet / 100 512120

DPD NEUTRALISING Tablet / 100 511020BT

Page 66

PM620_4c 07/2015

1.1 Methods

Copper with Tablet

0.05 – 5 mg/l Cu

The following selection is shown in the display:

for the differentiated determination of free, combined and total Copper.

for the determination of free Copper.

for the determination of total Copper.

Select the desired determination with the arrow keys [ ] and [ ]. Conﬁrm with [ ] key.

Note:

1. If ??? is displayed at the diffentiated test result see page 166.

Reagent Form of reagent/Quantity Order-No. Set

COPPER No. 1 / No. 2

Tablet / per 100 inclusive stirring rod

517691BT

COPPER No. 1 Tablet / 100 513550BT

COPPER No. 2 Tablet / 100 513560BT

Copper >> diff free total

>> diff

>> free

>> total

Page 67

PM620_4c 07/2015

1.1 Methods

Copper, differentiated determination with Tablet

0.05 – 5 mg/l Cu

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one COPPER No. 1 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

9. Remove the vial from the sample chamber.

10. Add one COPPER No. 2 tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

11. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

12. Place the vial in the sample chamber making sure that the marks are aligned.

13. Press TEST key.

The result is shown in the display in: mg/l free Copper mg/l combined Copper mg/l total Copper

*,** mg/l free Cu

*,** mg/l comb Cu *,** mg/l total Cu

Zero accepted prepare T1 press TEST

prepare Zero press ZERO

T1 accepted prepare T2 press TEST

Page 68

PM620_4c 07/2015

1.1 Methods

Copper, free with Tablet

0.05 – 5 mg/l Cu

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one COPPER No. 1 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display in mg/l free Copper.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 69

PM620_4c 07/2015

1.1 Methods

Copper, total with Tablet

0.05 – 5 mg/l Cu

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one COPPER No. 1 tablet and one COPPER No. 2 tablet straight from the foil to the water sample and crush the tablets using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display in mg/l total Copper.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 70

PM620_4c 07/2015

1.1 Methods

Copper, free (Note 1) with Vario Powder Pack

0.05 – 5 mg/l Cu

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add the contents of one VARIO Cu 1 F10 Powder Pack straight from the foil to the water sample.

6. Close the vial tightly with the cap and swirl several times to mix the contents (Note 3).

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display in mg/l Copper

Countdown 2:00

prepare Zero press ZERO

Zero accepted prepare Test press TEST

1 2

3 4

Page 71

PM620_4c 07/2015

1.1 Methods

Notes:

1. For determination of total Copper digestion is required.

2. Extremely acid water samples (pH 2 or less) must be adjusted between pH 4 and pH 6 before the reagent is added (with 8 mol/l Potassium hydroxide solution KOH). Caution: pH values above 6 can lead to Copper precipitation.

3. Accuracy is not affected by undissolved powder.

4. Interferences:

Cyanide, CN-Cyanide prevents full colour development.

Add 0.2 ml Formaldehyde to 10 ml water sample and wait for a reaction time of 4 minutes (Cyanide is masked). After this perform test as described. Multiply the result by 1.02 to correct the sample dilution by Formaldehyde.

Silver, Ag

If a turbidity remains and turns black, silver interference is likely. Add 10 drops of saturated Potassium chloride solution to 75 ml of

water sample. Filtrate through a ﬁne ﬁlter. Use 10 ml of the ﬁltered water sample to perform test.

Reagent Form of reagent/Quantity Order-No.

VARIO Cu 1 F10 Powder Pack / 100 530300

Page 72

PM620_4c 07/2015

1.1 Methods

CyA-TEST (Cyanuric acid) with Tablet

0 – 160 mg/l CyA

1. Fill a clean vial (24 mm Ø) with 5 ml of the water sample and 5 ml deionised water (Note 1), close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one CyA-TEST tablet straight from the foil to the prepared water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved (Note 2, 3).

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display in mg/l Cyanuric acid.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Page 73

PM620_4c 07/2015

1.1 Methods

Notes:

1. Use deionised water or tap water free of Cyanuric acid.

2. If Cyanuric acid is present a cloudy solution will occur. Small single particles are not necessarily caused by Cyanuric acid.

3. Dissolve the tablet completely (therefore swirl the vial approx. 1 minute). Un-dissolved particles of the tablet can cause results that are too high.

Reagent Form of reagent/Quantity Order-No.

CyA-TEST Tablet / 100 511370BT

Page 74

PM620_4c 07/2015

1.1 Methods

H2O2 (Hydrogen peroxide) HR with Liquid Reagent

40 – 500 mg/l H2O

Insert the adapter for 16 mm Ø vials.

1. Fill a clean vial (16 mm Ø) with 10 ml of the water sample, close tightly with the cap. (Note 1, 2)

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press the ZERO key.

4. Remove the vial from the sample chamber.

5. Fill the prepared vial with drops of the same size by holding the bottle vertically and squeeze slowly:

6 drops of H2O2-Reagent

6. Close the vial tightly with the cap and invert several times to mix the contents.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press the TEST key.

The result is shown in the display in mg/l H2O2.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Ø 16 mm

Page 75

PM620_4c 07/2015

1.1 Methods

Notes:

1. The hydrogen peroxide is determined in the form of yellow/orange coloured peroxotitanic acids in strongly acidic media. In connection with neutral to weakly alkaline (~pH 10) samples, the acid in the reagent is sufﬁcient in order to produce a medium suitable for measurement. In the case of strongly alkaline samples (pH > 10), the samples must be acidiﬁed before measurement otherwise the results may be deﬁcient. This is achieved by diluting the sample with a 5% sulphuric acid solution, for example, at a ratio of 1:1.

In contrast to many other colour reactions, in connection with the presence of hydrogen peroxide, discoloration with long-term stability is achieved that can still be measured after 24 h. Particles in the sample solution or turbidity distort the analysis and must be eliminated by centrifuging or simply ﬁltering the sample solution prior to performing the measurement. Falsiﬁcation of the measurement results should also be expected in connection with coloured solutions.

2. Oxidising agents such as chlorine, bromine, chlorine dioxide and ozone do not distort the analysis. On the other hand, however, water discoloration does distort the analysis. In this case, proceed as described in the following:

• Fill a clean vial (16 mm Ø) with 10 ml of the water sample and perform zero calibration

(see “Operation”).

• Measure the sample solution without the addition of drops of reagent (result B).

• Then the same sample solution, measured with the addition of the reagent drops

(result A).

• Calculations: mg/l H2O2 = result A – result B

3. Attention: The reference reagent contains a 25% sulphuric acid solution. It is recommended to wear appropriate protective clothing (protective goggles/gloves).

Reagent Form of reagent/Quantity Order-No.

H2O2-reagent Liquid reagent / 15 ml 424991

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1.1 Methods

Hardness, Calcium 2T with Tablet

0 – 500 mg/l CaCO

1. Fill a clean vial (24 mm Ø) with 10 ml of water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one CALCIO H No. 1 tablet straight from the

foil to the 10 ml water sample, crush the tablet using a clean stirring rod and dissolve the tablet completely.

6. Add one CALCIO H No. 2 tablet straight from the foil

to the same water sample and crush the tablet using a clean stirring rod.

7. Close the vial tightly with the cap and swirl gently several times until the tablet is completely dissolved.

8. Place the vial in the sample chamber making sure that

the marks are aligned.

9. Press TEST key.

Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display as Calcium Hardness.

Zero accepted prepare Test press TEST

prepare Zero press ZERO

Countdown 2:00

9 1

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1.1 Methods

Notes:

1. To optimise the readings an optional batch related calibration can be performed using Mode 40, see page 138.

2. Strong alkaline or acidic water samples must be adjusted to a pH-value between pH 4 and 10 before the tablets are added (use 1 mol/l Hydrochloride acid resp. 1 mol/l Sodium hydroxide).

3. For accurate test results exactly 10 ml of water sample must be taken for the test.

4. This method was developed from a volumetric procedure for the determination of Calcium Hardness. Due to undeﬁned conditions, the deviations from the standardised method may be greater.

5. The tolerance of the method is increasing with higher concentrations. When diluting samples, this should be taken in account, always measuring in the ﬁrst third of the range.

6. Interferences:

• Magnesium hardness up to 200 mg/l CaCO3 does not interfere.

• Iron concentration above 10 mg/l may cause low results.

• Zinc concentration above 5 mg/l may cause high results.

7. CaCO3 °dH °eH °fH

°aH

Reagent Form of reagent/Quantity Order-No. Set

CALCIO H No. 1 / No. 2

Tablet / per 100 inclusive stirring rod

517761BT

Page 78

PM620_4c 07/2015

1.1 Methods

Hardness, total with Tablet

2 – 50 mg/l CaCO

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one HARDCHECK P tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

Wait for a reaction period of 5 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display as total Hardness.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 5:00

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PM620_4c 07/2015

1.1 Methods

Notes:

1. Strong alkaline or acidic water samples must be adjusted between pH 4 and pH 10 before the tablet is added (use 1 mol/l Hydrochloric acid resp. 1mol/l Sodium hydroxide).

2. Conversion table:

mg/l CaCO

°dH °fH °eH

1 mg/l CaCO

---- 0.056 0.10 0.07

1 °dH 17.8 ---- 1.78 1.25

1 °fH 10.0 0.56 ---- 0.70

1 °eH 14.3 0.80 1.43 ----

3. CaCO3 °dH °eH °fH

°aH

Reagent Form of reagent/Quantity Order-No.

HARDCHECK P Tablet / 100 515660BT

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PM620_4c 07/2015

1.1 Methods

Hardness, total HR with Tablet

20 – 500 mg/l CaCO

1. Fill a clean vial (24 mm Ø) with 1 ml of the water sample and 9 ml of deionised water, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one HARDCHECK P tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

Wait for a reaction period of 5 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display as total Hardness.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 5:00

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PM620_4c 07/2015

1.1 Methods

Notes:

1. Strong alkaline or acidic water samples must be adjusted between pH 4 and pH 10 before the tablet is added (use 1 mol/l Hydrochloric acid resp. 1mol/l Sodium hydroxide).

2. Conversion table:

mg/l CaCO

°dH °fH °eH

1 mg/l CaCO

---- 0.056 0.10 0.07

1 °dH 17.8 ---- 1.78 1.25

1 °fH 10.0 0.56 ---- 0.70

1 °eH 14.3 0.80 1.43 ----

3. CaCO3 °dH °eH °fH

°aH

Reagent Form of reagent/Quantity Order-No.

HARDCHECK P Tablet / 100 515660BT

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PM620_4c 07/2015

1.1 Methods

Iodine with Tablet

0.05 – 3.6 mg/l I

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber, empty the

vial leaving a view drops in.

5. Add one DPD No. 1 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

The result is shown in the display in mg/l Iodine.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

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1.1 Methods

Notes:

1. Oxidizing reagents, such as Chlorine, Bromine, etc. interfere as they react in the same way as Iodine.

Reagent Form of reagent/Quantity Order-No.

DPD No. 1 Tablet / 100 511050BT

Page 84

PM620_4c 07/2015

1.1 Methods

Iron (Note 1) with Tablet

0.02 – 1 mg/l Fe

Determination of total dissolved Iron Fe2+ and Fe

*This information refers to analysis of the water sample without digestion.

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one IRON LR tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key. Wait for a reaction period of 5 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in mg/l Iron (Fe

2+/3+

Notes:

1. This method determines the total dissolved Iron as Fe2+ and Fe3+.

2. The IRON (II) LR tablet is used for differentiation – as described above – instead of the IRON LR tablet. Fe3+ = Fe

2+/3+

– Fe

3. For the determination of total dissolved and undissolved iron digestion is required. An example is described on page 77.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 5:00

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1.1 Methods

Notes:

Digestion procedure for the determination of total dissolved and undissolved iron.

1. Add 1 ml of concentrated sulfuric acid to 100 ml water sample. Heat and boil for 10 minutes or until all particles are dissolved. After cooling down, the sample is set to a pHvalue of 3 to 6 by using ammonia solution. Reﬁll with deionised water to the previous volume of 100 ml and mix well. 10 ml of this pre-treated solution is used for the following analysis. Perform as described by the selected test method.

2. Water which has been treated with organic compounds like corrosion inhibitors must be oxidised where necessary to break down the iron. Therefore add 1 ml concentrated sulfuric acid and 1 ml concentrated nitric acid to 100 ml water sample and boil to approx. half volume. After cooling down, proceed as described above.

Reagent Form of reagent/Quantity Order-No.

IRON LR Tablet / 100 515370BT

IRON (II) LR Tablet / 100 515420BT

result Bresult A

minus

= Fe

+ Fe

IRON LR

tablet

IRON (II) LR

tablet

IRON LR

tablet

dissolved Iron

dissolved and

undissolved Iron

Filtration Digestion

Iron Determination

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PM620_4c 07/2015

1.1 Methods

Oxygen, active* with Tablet

0.1 – 10 mg/l O

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one DPD No. 4 tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in mg/l active Oxygen.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 2:00

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1.1 Methods

Notes: * Active Oxygen is a synonym for a common disinfectant (based on “Oxygen“)

in Swimming Pool Treatment.

1. When preparing the sample, the lost of Oxygen, e.g. by pipetting or shaking, must be avoided.

2. The analysis must take place immediately after taking the sample.

Reagent Form of reagent/Quantity Order-No.

DPD No. 4 Tablet / 100 511220BT

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PM620_4c 07/2015

1.1 Methods

Ozone with Tablet

0.02 – 2 mg/l O

The following selection is shown in the display:

for the determination of Ozone in the presence of Chlorine.

for the determination of Ozone in the absence of Chlorine.

Select the desired method with the arrow keys [ ] and [ ]. Conﬁrm with [ ] key.

Ozon >> with Cl without Cl

>> with Cl

>> without Cl

Page 89

PM620_4c 07/2015

1.1 Methods

Notes:

1. Vial cleaning: As many household cleaners (e.g. dishwasher detergent) contain reducing substances, the subsequent determination of Ozone may show lower results. To avoid any measurement errors, only use glassware free of Chlorine demand. Preparation: Put all applicable glassware into Sodium hypochlorite solution (0.1 g/l) for one hour, then rinse all glassware thoroughly with deionised water.

2. Preparing the sample: When preparing the sample, the lost of Ozone, e.g. by pipetting or shaking, must be avoided. The analysis must take place immediately after taking the sample.

3. The DPD colour development is carried out at a pH value of 6.2 to 6.5. The reagent tablet therefore contains a buffer for the pH adjustment. Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7 before the tablet is added (use 0.5 mol/l Sulfuric acid resp. 1 mol/l Sodium hydroxide).

4. Exceeding the measuring range: Concentrations above 6 mg/l Ozone can lead to results showing 0 mg/l. In this case, the water sample must be diluted with water free of Ozone. 10 ml of the diluted sample should be mixed with the reagent and the measurement repeated.

5. If ??? is displayed at the diffentiated test result see page 166.

6. Oxidising agents such as Bromine, Chlorine etc. interfere as they react in the same way as Ozone.

Reagent Form of reagent/Quantity Order-No. Set

DPD No. 1 / No. 3

Tablet / per 100 inclusive stirring rod

517711BT

DPD No. 1 Tablet / 100 511050BT

DPD No. 3 Tablet / 100 511080BT

GLYCINE Tablet / 100 512170BT

Page 90

PM620_4c 07/2015

1.1 Methods

Ozone, in the presence of Chlorine with Tablet

0.02 – 2 mg/l O

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet and one DPD No. 3 tablet straight from the foil and crush the tablets using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key.

Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

10. Remove the vial from the sample chamber, empty the vial, rinse vial and cap several times.

11. Fill a second clean vial with 10 ml of water sample.

12. Add one GLYCINE tablet straight from the foil and crush the tablet using a clean stirring rod.

prepare Zero press ZERO

Zero accepted prepare T1 press TEST

Countdown 2:00

0 0

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PM620_4c 07/2015

1.1 Methods

13. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

14. Add one DPD No. 1 tablet and one DPD No. 3 tablet straight from the foil into the ﬁrst cleaned vial and crush the tablets using a clean stirring rod.

15. Transfer the contents of the second vial (Glycine

solution) into the prepared vial (point 14).

16. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

17. Place the vial in the sample chamber making sure that the marks are aligned.

18. Press TEST key.

Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display in:

mg/l Ozone

mg/l total Chlorine

Notes:

See page 81

Countdown 2:00

T1 accepted prepare T2 press TEST

*,** mg/l O

*,** mg/l total Cl

Page 92

PM620_4c 07/2015

1.1 Methods

Ozone, in absence of Chlorine with Tablet

0.02 – 2 mg/l O

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber and empty it, leaving a few drops remaining in the vial.

5. Add one DPD No. 1 tablet and one DPD No. 3 tablet straight from the foil and crush the tablets using a clean stirring rod.

6. Add water sample to the 10 ml mark.

7. Close the vial tightly with the cap and swirl several times until the tablets are dissolved.

8. Place the vial in the sample chamber making sure that the marks are aligned.

9. Press TEST key. Wait for a reaction period of 2 minutes.

After the reaction period is ﬁnished the measurement starts automatically.

The result is shown in the display in

mg/l Ozone.

Notes: See page 81.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 2:00

Page 93

PM620_4c 07/2015

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PM620_4c 07/2015

1.1 Methods

PHMB (Biguanide) with Tablet

2 – 60 mg/l PHMB

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one PHMB PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display in mg/l PHMB.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

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PM620_4c 07/2015

1.1 Methods

Notes:

1. Clean vials with the brush immediately after analysis.

2. Vials and stirring rods may turn blue after prolonged use. In this case clean vials and stirring rods with a laboratory detergent (see chapter 1.2.2 Cleaning of vials and accessories for analysis). Rinse vials and caps thoroughly with tap water and then with deionised water.

3. The test result is inﬂuenced by Hardness and Total Alkalinity. The calibration of this method was done using water with the following concentration: Ca-Hardness: 200 mg/l CaCO3 Total Alkalinity: 120 mg/l CaCO

Reagent Form of reagent/Quantity Order-No.

PHMB PHOTOMETER Tablet / 100 516100BT

Page 96

PM620_4c 07/2015

1.1 Methods

Phosphate, ortho LR with Tablet

0.05 – 4 mg/l PO

1. Fill a clean vial (24 mm ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one PHOSPHATE No. 1 LR tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Add one PHOSPHATE No. 2 LR tablet straight from the foil to the same water sample and crush the tablet using a clean stirring rod.

7. Close the vial tightly with the cap and swirl gently several times until the tablet is dissolved.

8. Place the vial in the sample chamber making sure that

the marks aligned.

9. Press TEST key.

Wait for a reaction period of 10 minutes.

After the reaction period is ﬁnished the measurement

starts automatically.

The result is shown in the display as ortho-Phosphate.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

Countdown 10:00

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PM620_4c 07/2015

1.1 Methods

Notes

1. Only ortho-Phosphate ions PO

react.

2. The tablets must be added in the correct sequence.

3. The test sample should have a pH-value between 6 and 7.

4. Interferences: Higher concentrations of Cu, Ni, Cr (III), V (V) and W (VI) interfere due to their colour. Silicates do not interfere (masked by Citric acid in the tablets).

5. Conversion: mg/l P = mg/l PO4 x 0.33 mg/l P2O5= mg/l PO4 x 0.75

6. PO4 P

P2O

Reagent Form of reagent/Quantity Order-No. Set

PHOSPHATE No. 1 / No. 2 LR

Tablet / per 100 inclusive stirring rod

517651BT

PHOSPHATE No. 1 LR Tablet / 100 513040BT

PHOSPHATE No. 2 LR Tablet / 100 513050BT

Page 98

PM620_4c 07/2015

1.1 Methods

pH value LR 5.2 – 6.8 with Tablet

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one BROMOCRESOLPURPLE PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display as pH-value.

prepare Zero press ZERO

Zero accepted prepare Test press TEST

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PM620_4c 07/2015

1.1 Methods

Notes:

1. For photometric determination of pH values only use BROMOCRESOLPURPLE tablets in black printed foil pack and marked with PHOTOMETER.

2. pH values below 5.2 and above 6.8 can produce results inside the measuring range. A plausibility test (pH-meter) is recommended.

3. The accuracy of the colorimetric determination of pH-values depends on various boundary conditions (buffer capacity of the sample, salt contents etc.).

4. Salt error Correction of test results (average values) for samples with salt contents of:

Indicator Salt content

Bromcresolpurple 1 molar

– 0.26

2 molar

– 0.33

3 molar

– 0.31

The values of Parson and Douglas (1926) are based on the use of Clark and Lubs buffers. 1 Mol NaCl = 58.4 g/l = 5.8 %

Reagent Form of reagent/Quantity Order-No.

BROMOCRESOLPURPLE PHOTOMETER Tablet / 100 515700BT

Page 100

PM620_4c 07/2015

1.1 Methods

pH value 6.5 – 8.4 with Tablet

1. Fill a clean vial (24 mm Ø) with 10 ml of the water sample, close tightly with the cap.

2. Place the vial in the sample chamber making sure that the marks are aligned.

3. Press ZERO key.

4. Remove the vial from the sample chamber.

5. Add one PHENOL RED PHOTOMETER tablet straight from the foil to the water sample and crush the tablet using a clean stirring rod.

6. Close the vial tightly with the cap and swirl several times until the tablet is dissolved.

7. Place the vial in the sample chamber making sure that the marks are aligned.

8. Press TEST key.

The result is shown in the display as pH-value.

prepare Zero press ZERO

Zero accepted prepare Test press TEST