Hanna Instruments HI 83210-01 User Manual

Instruction Manual

HI 83210

Multiparameter Bench

Photometer

for Pulp & Paper Mills

www.hannainst.com

1

Dear Customer,
Thank you for choosing a Hanna product. Please read this instruction manual carefully before using the

instrument. This manual will provide you with the necessary information for the correct use of the
instrument. If you need additional technical information, do not hesitate to e-mail us at [e-mail].

TABLE OF CONTENTS

PRELIMINARY EXAMINATION .............................................................................................................................................. 3

ABBREVIATIONS ................................................................................................................................................................3

GENERAL DESCRIPTION ......................................................................................................................................................3

SPECIFICATIONS ............................................................................................................................................................... 4

PRECISION AND ACCURACY ................................................................................................................................................4

PRINCIPLE OF OPERATION ................................................................................................................................................. 4

FUNCTIONAL DESCRIPTION ................................................................................................................................................ 6

TIPS FOR AN ACCURATE MEASUREMENT ............................................................................................................................8

HEALTH & SAFETY ..........................................................................................................................................................11

METHOD REFERENCE TABLE ............................................................................................................................................. 11

OPERATIONAL GUIDE ....................................................................................................................................................... 12

SETUP ........................................................................................................................................................................... 14

HELP MODE ................................................................................................................................................................... 16

ALUMINUM .................................................................................................................................................................... 17

FREE CHLORINE ............................................................................................................................................................. 19

TOTAL CHLORINE ............................................................................................................................................................ 22

CHLORINE DIOXIDE ......................................................................................................................................................... 25

COLOR OF WATER ........................................................................................................................................................... 28

DISSOLVED OXYGEN ........................................................................................................................................................ 30

pH ................................................................................................................................................................................ 32

PHOSPHATE HR .............................................................................................................................................................. 34

PHOSPHATE LR ............................................................................................................................................................... 36

SILICA ........................................................................................................................................................................... 38

SILVER .......................................................................................................................................................................... 41

ZINC .............................................................................................................................................................................. 44

ERRORS AND WARNINGS ................................................................................................................................................. 46

DATA MANAGEMENT ........................................................................................................................................................ 47

STANDARD METHODS ...................................................................................................................................................... 48

ACCESSORIES ................................................................................................................................................................ 49

WARRANTY .................................................................................................................................................................... 50

HANNA LITERATURE ........................................................................................................................................................ 51

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna
Instruments Inc., Woonsocket, Rhode Island, 02895 , USA.

2

PRELIMINARY EXAMINATION

Please examine this product carefully. Make sure that the instrument is not damaged. If any damage
occurred during shipment, please notify your local Hanna Office.

Each Meter is supplied complete with:

• Four Sample Cuvettes and Caps

• Cloth for wiping cuvettes (1 pcs)

• 60 mL glass bottle for dissolved oxygen analysis (1 pcs)

• Scissors

• AC/DC Power Adapter

• Instruction Manual

Note: Save all packing material until you are sure that the instrument works correctly. Any defective item

must be returned in its original packing with the supplied accessories.

ABBREVIATIONS

EPA: US Environmental Protection Agency

°C: degree Celsius
°F: degree Fahrenheit

μg/L: micrograms per liter (ppb)

mg/L: milligrams per liter (ppm)

g/L: grams per liter (ppt)

mL: milliliter

HR: high range

LR: low range

MR: medium range

PAN: 1-(2-pyridylazo)-2-naphtol

TPTZ: 2,4,6-tri-(2-pyridyl)-1,3,5-triazine

GENERAL DESCRIPTION

HI 83210 is a multiparameter bench photometer dedicated for pulp and paper mills analysis. It measures
12 different methods using specific liquid or powder reagents. The amount of reagent is precisely dosed to
ensure maximum reproducibility.

HI 83210 bench photometer can be connected to a PC via an USB cable. The optional HI 92000
Windows® Compatible Software helps users manage all their results.

HI 83210 has a powerful interactive user support that assists the user during the analysis process.
Each step in the measurement process is help supported. A tutorial mode is available in the Setup Menu.

3

SPECIFICATIONS

Light Life Life of the instrument
Light Detector Silicon Photocell
Environment 0 to 50°C (32 to 122°F);

max 90% RH non-condensing

Power Supply external 12 Vdc power adapter

built-in rechargeable battery

Dimensions 235 x 200 x 110 mm (9.2 x 7.87 x 4.33")
Weight 0.9 Kg

For specifications related to each method (e.g. range, precision, etc.) refer to the related measurement
section.

PRECISION AND ACCURACY

Precision is how closely repeated measurements agree
with each other. Precision is usually expressed as
standard deviation (SD).

Accuracy is defined as the nearness of a test result to
the true value.

Although good precision suggests good accuracy, precise
results can be inaccurate. The figure explains these
definitions.

For each method, the precision is expressed in the
related measurement section.

PRINCIPLE OF OPERATION

Absorption of light is a typical phenomenon of interaction between electromagnetic radiation and matter.
When a light beam crosses a substance, some of the radiation may be absorbed by atoms, molecules or
crystal lattices.

If pure absorption occurs, the fraction of light absorbed depends both on the optical path length through the
matter and on the physical-chemical characteristics of substance according to the Lambert-Beer Law:

-log I/Io = ε
A = ε

c d

λ

or

c d

λ

4

Where:

-log I/I

=Absorbance (A)

o

Io=intensity of incident light beam
I =intensity of light beam after absorption

ε

=molar extinction coefficient at wavelength λ

λ

c =molar concentration of the substance
d =optical path through the substance

Therefore, the concentration "c" can be calculated from the absorbance of the substance as the other factors
are known.

Photometric chemical analysis is based on the possibility to develop an absorbing compound from a specific
chemical reaction between sample and reagents.

Given that the absorption of a compound strictly depends on the wavelength of the incident light beam, a
narrow spectral bandwidth should be selected as well as a proper central wavelength to optimize measurements.

The optical system of HI 83210 is based on special subminiature tungsten lamps and narrow-band
interference filters to guarantee both high performance and reliable results.

Five measuring channels allow a wide range of tests.

Instrument block diagram (optical layout)

A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned and beamed
through the sample contained in the cuvette. The optical path is fixed by the diameter of the cuvette. Then
the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light beam of intensity Io or I.

The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an
electric current, producing a potential in the mV range.

The microprocessor uses this potential to convert the incoming value into the desired measuring unit and to
display it on the LCD.

The measurement process is carried out in two phases: first the meter is zeroed and then the actual
measurement is performed.

The cuvette has a very important role because it is an optical element and thus requires particular attention. It
is important that both the measurement and the calibration (zeroing) cuvette are optically identical to provide the
same measurement conditions. Most methods use the same cuvette for both, so it is important that measurements
are taken at the same optical point. The instrument and the cuvette cap have special marks that must be
aligned in order to obtain better reproducibility.

The surface of the cuvette must be clean and not scratched. This is to avoid measurement interference due to
unwanted reflection and absorption of light. It is recommended not to touch the cuvette walls with hands.

Furthermore, in order to maintain the same conditions during the zeroing and the measurement phases,
it is necessary to cap the cuvette to prevent any contamination.

5

FUNCTIONAL DESCRIPTION

INSTRUMENT DESCRIPTION

1) Open Cuvette Lid

2) Indexing mark

3) Cuvette point

4) Liquid Crystal Display (LCD)

5) Splash proof keypad

6) ON/OFF power switch

7) Power input connector

8) USB connector

6

KEYPAD DESCRIPTION

The keypad contains 8 direct keys and 3 functional keys with the following functions:

Press to perform the function displayed above it on the LCD.

Press to exit the current screen.

Press to access the select method menu.

Press to move up in a menu or a help screen, to increment a set value, to access second level

functions.

Press to move down in a menu or a help screen, to decrement a set value, to access second

level functions.

Press to log the current reading.

Press to recall the log.

Press to display the help screen.

Press to access the setup screen.

7

TIPS FOR AN ACCURATE MEASUREMENT

The instructions listed below should be carefully followed during testing to ensure most accurate results.

• Color or suspended matter in large amounts may cause interference, and should be removed by
treatment with active carbon and filtration.

• Ensure the cuvette is filled correctly: the liquid in the cuvette forms a convexity on the top; the bottom
of this convexity must be at the same level as the 10 mL mark.

COLLECTING AND MEASURING SAMPLES

• In order to measure exactly 0.5 mL of reagent with the 1 mL syringe:
(a) push the plunger completely into the syringe and insert the tip into the solution.
(b) pull the plunger up until the lower edge of the seal is exactly on the 0.0 mL mark.
(c) take out the syringe and clean the outside of the syringe tip. Be sure that no drops are hanging

on the tip of the syringe, if so eliminate them. Then, keeping the syringe in vertical position above
the cuvette, push the plunger down into the syringe until the lower edge of the seal is exactly on
the 0.5 mL mark. Now the exact amount of 0.5 mL has been added to the cuvette, even if the
tip still contains some solution.

USING LIQUID AND POWDER REAGENTS

• Proper use of the dropper:
(a) for reproducible results, tap the dropper on the table for several times and wipe the outside of the

dropper tip with a cloth.

(b) always keep the dropper bottle in a vertical position while dosing the reagent.

(a) (b)

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• Proper use of the powder reagent packet:
(a) use scissors to open the powder packet;
(b) push the edges of the packet to form a spout;
(c) pour out the content of the packet.

USING CUVETTES

• Proper mixing is very important for reproducibility of the measurements. The right way of mixing a
cuvette is specified for each method in the related chapter.

(a) invert the cuvette a couple of times or for a specified time: hold the cuvette in the vertical position. Turn

the cuvette upside-down and wait for all of the solution to flow to the cap end, then return the cuvette
to the upright vertical position and wait for all of the solution to flow to the cuvette bottom. This is one
inversion. The correct speed for this mixing technique is 10-15 complete inversions in 30 seconds.

This mixing technique is indicated with “invert to mix” and the following icon:

(b) shaking the cuvette, moving the cuvette up and down. The movement may be gentle or vigorous.

This mixing method is indicated with “shake gently” or “shake vigorously”, and one of the following
icons:

shake gently shake vigorously

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• Pay attention to push the cuvette completely down in the holder and to align the white point on the
cap to the indexing mark on the meter.

• In order to avoid reagent leaking and to obtain more accurate
measurements, close the cuvette first with the supplied HDPE plastic

stopper and then the black cap.

• Each time the cuvette is used, the cap must be tightened to the same degree.

• Whenever the cuvette is placed into the measurement cell, it must be dry
outside, and free of fingerprints, oil or dirt. Wipe it thoroughly with
HI 731318 or a lint-free cloth prior to insertion.

• Shaking the cuvette can generate bubbles in the sample, causing higher
readings. To obtain accurate measurements, remove such bubbles by
swirling or by gently tapping the cuvette.

• Do not let the reacted sample stand too long after reagent is added. For
best accuracy, respect the timings described in each specific method.

• It is possible to take multiple readings in a row, but it is recommended to
take a new zero reading for each sample and to use the same cuvette for
zeroing and measurement when possible (for most precise results follow the
measurement procedures carefully).

• Discard the sample immediately after the reading is taken, or the glass might become permanently
stained.

• All the reaction times reported in this manual are at 25 °C (77 °F). In general, the reaction time
should be increased for temperatures lower than 20 °C (68 °F), and decreased for temperatures higher
than 25 °C (77 °F).

INTERFERENCES

• In the method measurement section the most common interferences that may be present in an average
sample matrix have been reported. It may be that for a particular treatment process other compounds
do interfere with the method of analysis.

10

HEALTH & SAFETY

• The chemicals contained in the reagent kits may be hazardous if improperly handled.

• Read the Material Safety Data Sheet (MSDS) before performing tests.

• Safety equipment: Wear suitable eye protection and clothing when required, and follow instructions
carefully.

• Reagent spills: If a reagent spill occurs, wipe up immediately and rinse with plenty of water.
If reagent contacts skin, rinse the affected area thoroughly with water. Avoid breathing released vapors.

• Waste disposal: for proper disposal of reagent kits and reacted samples, refer to the Material Safety
Data Sheet (MSDS).

METHOD REFERENCE TABLE

Method Method Page

description

1 Aluminum 17
2 Free Chlorine 19
3 Total Chlorine 22
4 Chlorine Dioxide 25
5 Color of Water 28
6 Dissolved Oxygen 30
7pH 32
8 Phosphate HR 34

9 Phosphate LR 36
10 Silica 38
11 Silver 41
12 Zinc 44

11

OPERATIONAL GUIDE

POWER CONNECTION AND BATTERY MANAGEMENT

The meter can be powered from an AC/DC adapter (included) or from the built-in rechargeable battery.
Note: Always turn the meter off before unplugging it to ensure no data is lost.
When the meter switches ON, it verifies if the power supply adapter is connected. The battery icon on the

LCD will indicate the battery status:

- battery is charging from external adapter - battery fully charged (meter connected to AC/DC adapter)

- battery capacity (no external adapter) - battery Low (no external adapter)

- battery Dead (no external adapter)

METHOD SELECTION

• Turn the instrument ON via the ON/OFF power switch.

• The meter will perform an autodiagnostic test. During this test, the Hanna Instrument logo will appear on

the LCD. After 5 seconds, if the test was successful, the last method used will appear on the display.

• In order to select the desired method press the METHOD key and a screen with the available methods will

appear.

• Press the   keys to highlight the desired method. Press Select.

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• After the desired method is selected, follow the measurement described in the related section.

• Before performing a test you should read all the instructions carefully.

DATA MANAGEMENT

The instrument features a data log function to help you keep track of all your analysis. The data log can
hold 200 individual measurements. Storing, viewing and deleting the data is possible using the LOG
and

RCL keys

Storing data

stored with date and time stamps.

..

.

..

: You can store only a valid measurement. Press LOG

and the last valid measurement will be

Viewing and deleting

the last saved measurement. Additionally, you can delete the data records all at once.

: You can view and delete the data log by pressing the RCL key. You can only delete

CHEMICAL FORM

Chemical form conversion factors are pre-programmed into the instrument and are method specific. In order
to view the displayed result in the desired chemical form press  or  to access the second level functions
and then press the Chem Frm functional key to toggle between the available chemical forms for the
selected method.

13

SETUPSETUP

SETUP

SETUPSETUP

In the Setup mode the instrument’s parameters can be changed. Some parameters affect the measuring
sequence and others are general parameters that change the behavior or appearance of the instrument.

Press SETUP to enter the setup mode.
Press ESC or SETUP to return to the main screen.
A list of setup parameters will be displayed with currently
configured settings. Press HELP for additional information.

Press the   keys to select a parameter and change the
value as follows:

Backlight

Values: 0 to 8.

Press the Modify key to access the backlight value.
Use the W X functional keys or the   keys to increase or
decrease the value.
Press the Accept key to confirm or ESC to return to the setup

menu without saving the new value.

Contrast

Values: 0 to 20.

This option is used to set the display’s contrast.
Press the Modify key to change the display’s contrast.
Use the W X functional keys or the   keys to increase or
decrease the value.
Press the Accept key to confirm the value or ESC to return to the
setup menu without saving the new value.

14

Date / Time

This option is used to set the instrument’s date and time.
Press the Modify key to change the date/time.
Press the W X functional keys to highlight the value to be
modified (year, month, day, hour, minute or second). Use the
  keys to change the value.
Press the Accept key to confirm or ESC to return to the setup

without saving the new date or time.

Time format

Option: AM/PM or 24 hour.

Press the functional key to select the desired time format.

Date format

Press the Modify key to change the Date Format.
Use the   keys to select the desired format.
Press the Accept key to confirm or ESC to return to the setup

menu without saving the new format.

Language

Press the corresponding key to change the language.
If the new language cannot be loaded, the previously selected
language will be reloaded.

Tutorial

Option: Enable or Disable.

If enabled this option will provide the user short guide related to
the current screen.
Press the functional key to enable/disable the tutorial mode.

Beeper

Option: Enable or Disable.

When enabled, a short beep is heard every time a key is pressed.
A long beep alert sounds when the pressed key is not active or an
error condition is detected.

Press the functional key to enable/disable the beeper.

15

Instrument ID

Option: 0 to 9999.

This option is used to set the instrument’s ID (identification
number). The instrument ID is used while exchanging data with
a PC.
Press the Modify key to access the instrument ID screen. Press
the   keys in order to set the desired value.
Press the Accept key to confirm the value or ESC to return to the
setup menu without saving the new value.

Meter information

Press the Select key to view the instrument model, firmware
version, language version and instrument serial number.

Press ESC to return to the Setup mode.

HELP MODEHELP MODE

HELP MODE

HELP MODEHELP MODE

HELP MODE

HI 83210 offers an interactive contextual help mode that assists the user at any time.

To access the help screens press HELP.
The instrument will display additional information related to
the current screen. To read all the available information, scroll
the text using the   keys.
Press the Support key to access a screen with Hanna service
centers and their contact details.
Press the Accessories key to access a list of instrument reagents
and accessories.
To exit support or accessories screens press ESC and the
instrument will return to the previous help screen.
To exit help mode press the HELP or ESC key again and the
meter will return to the previously selected screen.

16

ALUMINUM

SPECIFICATIONS

Range 0.00 to 1.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.02 mg/L ±4% of reading at 25 °C
Typical EMC ±0.01 mg/L

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the aluminon method. The reaction between aluminum and reagents

causes a reddish tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93712A-0 Ascorbic acid 1 packet
HI 93712B-0 Aluminon reagent 1 packet
HI 93712C-0 Bleaching powder 1 packet

REAGENT SETS

HI 93712-01 Reagents for 100 tests
HI 93712-03 Reagents for 300 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the
the

Aluminum

Method Selection

method using the procedure described in
section (see page 12).

• Fill a graduated beaker with 50 mL of sample.

• Add the content of one packet of HI 93712A-0 Ascorbic acid
and mix until completely dissolved.

• Add the content of one packet of HI 93712B-0 Aluminon
reagent and mix until completely dissolved. This is the sample.

• Fill two cuvettes with 10 mL of sample each (up to the mark).

17

10 mL

# 1

10 mL

# 2

Aluminum

• Add the content of one packet of HI 93712C-0 Bleaching
powder to one of the two cuvettes. Replace the cap and shake
vigorously until completely dissolved. This is the blank.

• Place the blank into the holder and close the lid.

# 1

• Press Timer and the display will show the countdown prior to

# 1

zeroing the blank. Alternatively wait for 15 minutes and then press
Zero. The display will show “-0.0-” when the meter is zeroed and
ready for measurement.

# 2

• Remove the blank and insert the other cuvette into the instrument.

• Press the Read key and the meter will perform the reading. The instrument displays the results in
mg/L of aluminum.

• Press  or  to access the second level functions.

• Press the Chem Frm key to convert the result in mg/L of Al2O3.

• Press  or  to return to the measurement screen.

INTERFERENCES

Interference may be caused by:
Iron above 20 mg/L, Alkalinity above 1000 mg/L, Phosphate above 50 mg/L; Fluoride must be absent.

Aluminum

18

FREE CHLORINE

SPECIFICATIONS

Range 0.00 to 2.50 mg/L
Resolution 0.01 mg/L
Accuracy ±0.03 mg/L ±3% of reading at 25 °C
Typical EMC ±0.01 mg/L

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the

DPD reagent causes a pink tint in the sample.

REQUIRED REAGENTS

POWDER:
Code Description Quantity

HI 93701-0 DPD 1 packet

LIQUID:
Code Description Quantity

HI 93701A-F DPD1 Indicator 3 drops
HI 93701B-F DPD1 Buffer 3 drops

REAGENT SETS

HI 93701-F Reagents for 300 tests (liquid)
HI 93701-01 Reagents for 100 tests (powder)
HI 93701-03 Reagents for 300 tests (powder)

For other accessories see page 49.

EPA DPD method 330.5.

The reaction between free chlorine and the

MEASUREMENT PROCEDURE

• Select the

• Fill the cuvette with 10 mL of unreacted sample (up to the

• Place the cuvette into the holder and close the lid.

Free Chlorine

in the

Method Selection

mark) and replace the cap.

method using the procedure described
section (see page 12).

19

10 mL

Free Chlorine

• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the cuvette.

Powder reagents procedure

• Add the content of one packet of HI 93701 DPD reagent. Replace
the cap and shake gently for 20 seconds (or 2 minutes for seawater
analysis).

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 1 minute and press Read. When the timer ends the meter will perform the reading. The instrument
displays the results in mg/L of free chlorine.

Liquid reagents procedure

• To an empty cuvette add 3 drops of HI 93701A-F DPD1
indicator and 3 drops of HI 93701B-F DPD1 buffer. Swirl
gently to mix, and immediately add 10 mL of unreacted
sample. Replace the cap and shake gently again.

Free Chlorine

20

• Reinsert the cuvette into the instrument.

• Press Read to start the reading. The instrument displays the results in mg/L of free chlorine.

INTERFERENCES

Interference may be caused by: Bromine, Iodine, Ozone, Oxidized forms of Chromium and Manganese.
In case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately

2 minutes after adding the powder reagent.
In case of water with alkalinity greater than 250 mg/L CaCO3 or acidity greater than 150 mg/L CaCO3,

the color of the sample may develop only partially, or may rapidly fade. To resolve this, neutralize the
sample with diluted HCl or NaOH.

21

Free Chlorine

TOTAL CHLORINE

SPECIFICATIONS

Range 0.00 to 3.50 mg/L
Resolution 0.01 mg/L
Accuracy ±0.03 mg/L ±3% of reading at 25 °C
Typical EMC ±0.01 mg/L

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the

DPD reagent causes a pink tint in the sample.

REQUIRED REAGENTS

POWDER:
Code Description Quantity

HI 93711-0 DPD 1 packet

LIQUID:
Code Description Quantity

HI 93701A-T DPD1 indicator 3 drops
HI 93701B-T DPD1 buffer 3 drops
HI 93701C DPD3 solution 1 drop

REAGENT SETS

HI 93701-T Reagents for 300 total chlorine tests (liquid)
HI 93711-01 Reagents for 100 total chlorine tests (powder)
HI 93711-03 Reagents for 300 total chlorine tests (powder)

For other accessories see page 49.

EPA DPD method 330.5.

The reaction between the chlorine and the

MEASUREMENT PROCEDURE

• Select the
described in the

• Fill the cuvette with 10 mL of unreacted sample (up to the
mark) and replace the cap.

• Place the cuvette into the holder and close the lid.

Total Chlorine

Total Chlorine

Method Selection

method using the procedure

section (see page 12).

22

10 mL

• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the cuvette.

Powder reagents procedure

• Add 1 packet of HI 93711 DPD reagent. Replace the cap and
shake gently for 20 seconds (or 2 minutes for seawater analysis).

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the
measurement or, alternatively, wait for 2 minutes and 30 seconds
and press Read. When the timer ends the meter will perform the
reading. The instrument displays the results in mg/L of total

chlorine.

Liquid reagents procedure

• To an empty cuvette add 3 drops of HI 93701A-T
DPD1 indicator, 3 drops of HI 93701B-T DPD1 buffer
and 1 drop of HI 93701C DPD3 solution. Swirl gently
to mix and immediately add 10 mL of unreacted
sample. Replace the cap and shake gently again.

• Reinsert the cuvette into the instrument.

23

Total Chlorine

• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 2 minutes and 30 seconds and press Read. When the timer ends the meter will perform the
reading.

• The instrument displays the results in mg/L of total chlorine.

Note: free and total chlorine have to be measured separately with fresh unreacted samples following
the related procedure if both values are requested.

INTERFERENCES

Interference may be caused by: Bromine, Iodine, Ozone, Oxidized forms of Chromium and Manganese.
In case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately

2 minutes after adding the powder reagent.
In case of water with alkalinity greater than 250 mg/L CaCO3 or acidity greater than 150 mg/L CaCO3,

the color of the sample may develop only partially, or may rapidly fade. To resolve this, neutralize the
sample with diluted HCl or NaOH.

Total Chlorine

24

CHLORINE DIOXIDE

SPECIFICATIONS

Range 0.00 to 2.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.10 mg/L ±5% of reading at 25 °C
Typical EMC ±0.01 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 575 nm
Method Adaptation of the Chlorophenol Red method. The reaction between chlorine dioxide and

reagents causes a colorless to purple tint in the sample.

REQUIRED REAGENT

Code Description Quantity

HI 93738A-0 Reagent A 1 mL
HI 93738B-0 Dechlorinating Reagent B 1 packet
HI 93738C-0 Reagent C 1 mL
HI 93738D-0 Reagent D 1 mL

REAGENT SETS

HI 93738-01 Reagents for 100 tests
HI 93738-03 Reagents for 300 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the
described in the

• Fill two graduated mixing cylinders (#1 & #2) up to the
25 mL mark with the sample.

Chlorine Dioxide

Method Selection

method using the procedure

section (see page 12).

# 1

25 mL

# 2

25 mL

• Add 0.5 mL of HI 93738A-0 Chlorine Dioxide Reagent to each cylinder (#1 & #2), close them and
invert several times to mix.

# 1 & # 2

# 1 # 2

25

Chlorine Dioxide

• Add the content of one packet of HI 93738B-0 Dechlorinating Reagent to one of the two cylinders
(#1), close and invert it several times until it is totally dissolved. This is the blank.

# 1

• Add precisely 0.5 mL of HI 93738C-0 Chlorine Dioxide Reagent to each cylinder (#1 & #2), close them
and invert several times to mix.

# 1 & # 2

# 1

# 2

• Add 0.5 mL of HI 93738D-0 Chlorine Dioxide Reagent to each cylinder (#1 & #2), close them and
invert several times to mix. Cylinder #2 is the reacted sample.

# 1 & # 2

# 1

• Fill a cuvette with 10 mL of the blank (#1) up to the mark

# 2

# 1

10 mL

and replace the cap.

• Place the blank (#1) into the holder and close the lid.

Chlorine Dioxide

26

# 1

• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for

measurement.

# 2

• Fill another cuvette with 10 mL of the reacted sample (#2) up

10 mL

to the mark and replace the cap.

# 2

• Insert the sample into the instrument.

• Press Read and the meter will perform the reading. The instrument displays the results in mg/L of

chlorine dioxide.

SAMPLING PROCEDURE

It is recommended to analyze chlorine dioxide samples immediately after collection. Chlorine dioxide samples
must be stored in sealed dark glass bottle, with minimal head space. Excessive heat (above 25°C/78°F),
agitation and exposure to light must be avoided.

INTERFERENCES

Interferences may be caused by strong oxidants.

27

Chlorine Dioxide

COLOR OF WATER

SPECIFICATIONS

Range 0 to 500 PCU (Platinum Cobalt Units)
Resolution 1 PCU
Accuracy ±10 PCU ±5% of reading at 25 °C
Typical EMC ± 1 PCU

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 420 nm
Method Adaptation of the

18th edition

REQUIRED ACCESSORIES

0.45 μm membrane for true color measurement.

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the

Color of Water

the

Method Selection

method using the procedure described in

section (see page 12).

Standard Methods for the Examination of Water and Wastewater,

, Colorimetric Platinum Cobalt method.

10 mL

• Fill one cuvette up to the mark with deionized water and replace

# 1

the cap. This is the blank.

# 1

• Place the blank (# 1) into the holder and close the lid.

• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the blank.

Color of Water

28

• Fill the second cuvette up to the mark with unfiltered sample
and replace the cap. This is the apparent color.

• Filter 10 mL of sample through a filter with a 0.45 μm
membrane into the third cuvette, up to the 10 mL mark and
replace the cap. This is the true color.

• Insert the apparent color cuvette (# 2) into the instrument and
close the lid.

• Press Read to start the reading.

• The meter displays the value of apparent color in PCU.

10 mL

# 2

# 3

# 2

• Remove the cuvette, insert the true color cuvette (# 3) into the

# 3

instrument and ensure that the notch on the cap is positioned
securely into the groove.

• Press Read to start the reading. The meter displays the value of true color in PCU.

29

Color of Water

DISSOLVED OXYGEN

SPECIFICATIONS

Range 0.0 to 10.0 mg/L
Resolution 0.1 mg/L
Accuracy ±0.4 mg/L ±3% of reading at 25 °C
Typical EMC ± 0.1 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 420 nm
Method Adaptation of the

18th edition,

and the reagents causes a yellow tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93732A-0 Reagent A 5 drops
HI 93732B-0 Reagent B 5 drops
HI 93732C-0 Reagent C 10 drops

REAGENT SET

HI 93732-01 Reagents for 100 tests
HI 93732-03 Reagents for 300 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the

Dissolved Oxygen

the

Method Selection

section (see page 12).

Standard Methods for the Examination of Water and Wastewater,

Azide modified Winkler method. The reaction between dissolved oxygen

method using the procedure described in

• Fill one 60 mL glass bottle completely with the unreacted sample.

• Replace the cap and ensure that a small part of the sample spills
over.

• Remove the cap and add 5 drops of HI 93732A-0 and 5 drops of
HI 93732B-0.

• Add more sample, to fill the bottle completely. Replace the cap
again and ensure that a part of the sample spills over. This is to
make sure that no air bubbles have been trapped inside, which
could alter the reading.

• Invert several times the bottle. The sample becomes orange-yellow
and a flocculent agent will appear.

Dissolved Oxygen

30

• Let the sample stand and the flocculent agent will start to settle.

• After approximately 2 minutes, when the upper half of the bottle becomes limpid, add
10 drops of HI 93732C-0.

• Replace the cap and invert the bottle until the settled flocculent dissolves completely.
The sample is ready for measurement when it is yellow and completely limpid.

10 mL

• Fill the cuvette up to the mark with 10 mL of the unreacted
(original) sample, and replace the cap. This is the blank.

• Place the cuvette into the holder and close the lid.

• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the cuvette.

• Fill another cuvette up to the mark with 10 mL of the reacted
sample and replace the cap.

• Reinsert the cuvette into the instrument.

• Press Read to start the reading. The instrument will display the results in mg/L of dissolved oxygen.

INTERFERENCES

Interferences may be caused by reducing and oxidizing materials.

31

Dissolved Oxygen

pH

SPECIFICATIONS

Range 6.5 to 8.5 pH
Resolution 0.1 pH
Accuracy ±0.1 pH at 25 °C
Typical EMC ±0.1 pH

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the Phenol Red method. The reaction with the reagent causes a yellow

to red tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93710-0 Phenol Red Indicator 5 drops

REAGENT SETS

HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the pH method using the procedure described in the

Method Selection

• Fill the cuvette with 10 mL of unreacted sample (up to the
mark) and replace the cap.

section (see page 12).

10 mL

• Place the cuvette into the holder and close the lid.

• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for
measurement.

pH

32

• Remove the cuvette and add 5 drops of HI 93710-0 Phenol
Red Indicator. Replace the cap and mix the solution.

• Reinsert the cuvette into the instrument.

• Press the Read key to start the reading. The instrument displays the pH value.

33

pH

PHOSPHATE HIGH RANGE

SPECIFICATIONS

Range 0.0 to 30.0 mg/L
Resolution 0.1 mg/L
Accuracy ±1 mg/L ±4% of reading at 25 °C
Typical EMC Dev. ±0.1 mg/L
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the

18th edition,

causes a blue tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93717A-0 Molybdate 10 drops
HI 93717B-0 Reagent B 1 packet

REAGENT SETS

HI 93717-01 Reagents for 100 tests
HI 93717-03 Reagents for 300 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the
in the

• Fill the cuvette with 10 mL of unreacted sample (up to the
mark) and replace the cap.

Phosphate HR

Method Selection

method using the procedure described

section (see page 12).

Standard Methods for the Examination of Water and Wastewater,

Amino Acid method. The reaction between phosphate and reagents

10 mL

• Place the cuvette into the holder and close the lid.

• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for
measurement.

• Remove the cuvette.

• Add 10 drops of HI 93717A-0 Molybdate reagent.

Phosphate HR

34

• Add the content of one packet of HI 93717B-0 Phosphate
HR Reagent B to the cuvette. Replace the cap and shake
gently until completely dissolved.

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 5 minutes and press Read. When the timer ends the meter will perform the reading. The instrument
displays the results in mg/L of phosphate (PO

3

¯).

4

• Press  or  to access the second level functions.

• Press the Chem Frm key to convert the result in mg/L of phosphorus (P) and phosphorus pentoxide
(P2O5).

• Press  or  to return to the measurement screen.

INTERFERENCES

Sulfide
Chloride above 150000 mg/L
Calcium above 10000 mg/L as CaCO
Magnesium above 40000 mg/L as CaCO
Ferrous iron above 100 mg/L

3

3

35

Phosphate HR

PHOSPHATE LOW RANGE

SPECIFICATIONS

Range 0.00 to 2.50 mg/L
Resolution 0.01 mg/L
Accuracy ±0.04 mg/L ±4% of reading at 25 °C
Typical EMC Dev. ±0.01 mg/L
Light Source Tungsten lamp with narrow band interference filter @ 610 nm
Method Adaptation of the Ascorbic Acid method. The reaction between phosphate and the

reagent causes a blue tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93713-0 Powder reagent 1 packet

REAGENT SETS

HI 93713-01 Reagents for 100 tests
HI 93713-03 Reagents for 300 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the
described in the

• Rinse, cap and shake the cuvette several times with unreacted
sample. Fill the cuvette with 10 mL of sample up to the
mark and replace the cap.

Phosphate LR

Method Selection

method using the procedure

section (see page 12).

10 mL

• Place the cuvette into the holder and close the lid.

• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the cuvette and add the content of one packet of
HI 93713-0 reagent. Replace the cap and shake gently (for
about 2 minutes) until the powder is completely dissolved.

Phosphate LR

36

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 3 minutes and press Read. When the timer ends the meter will perform the reading. The instrument
displays concentration in mg/L of phosphate (PO

3

¯).

4

• Press  or  to access the second level functions.

• Press the Chem Frm key to convert the result in mg/L of phosphorus (P) and phosphorus pentoxide
(P2O5).

• Press  or  to return to the measurement screen.

INTERFERENCES

Interference may be caused by:
Iron above 50 mg/L
Silica above 50 mg/L
Silicate above 10 mg/L
Copper above 10 mg/L
Hydrogen sulfide, arsenate, turbid sample and highly buffered samples also interfere.

37

Phosphate LR

SILICA

SPECIFICATIONS

Range 0.00 to 2.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.03 mg/L ±3% of reading reading at 25 °C
Typical EMC ±0.01 mg/L

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 610 nm
Method Adaptation of the

Heteropoly Blue method. The reaction between silica and reagents causes a blue tint in
the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93705A-0 Molybdate 6 drops
HI 93705B-0 Citric acid 1 packet
HI 93705C-0 Amino acid 1 packet

REAGENT SETS

HI 93705-01 Reagents for 100 tests
HI 93705-03 Reagents for 300 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the

Method Selection

• Fill the cuvette with 10 mL of unreacted sample (up to the
mark).

Silica

method using the procedure described in the
section (see page 12).

ASTM Manual of Water and Environmental Technology, D859,

10 mL

• Add 6 drops of HI 93705A-0 Molybdate reagent. Replace the
cap and swirl the solution.

• Wait for 4 minutes, add the content of one packet of
HI 93705B-0 Citric acid reagent and shake until it is
completely dissolved.

• Wait for 1 minute. This is the blank.

Silica

38

• Place the cuvette into the holder and close the lid.

• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for measurement.

• Remove the cuvette and add the content of one packet
of HI 93705C-0 Amino acid reagent and shake until it
is completely dissolved.

• Reinsert the cuvette into the instrument.

• Press Timer and the display will show the countdown prior to the measurement. Alternatively, wait for
exactly 3 minutes and press Read. When the timer ends the meter will perform the reading. The
instrument displays concentration in mg/L of silica (SiO2).

• Press  or  to access the second level functions.

• Press the Chem Frm key to convert the result in mg/L of Silicon (Si).

39

Silica

• Press  or  to return to the measurement screen.

INTERFERENCES

Interference may be caused by:
Phosphate above 60 mg/L
Phosphate above 75 mg/L
Sulfide and high concentration of iron
Eliminate color and turbidity interferences by zeroing the meter with the original water sample.

Silica

40

SILVER

SPECIFICATIONS

Range 0.000 to 1.000 mg/L
Resolution 0.005 mg/L
Accuracy ±0.020 mg/L ±5% of reading at 25 °C
Typical EMC ± 0.001 mg/L

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 575 nm.
Method Adaptation of the PAN method. The reaction between silver and reagents causes an

orange tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93737A-0 Buffer Reagent A 1 mL
HI 93737B-0 Buffer Reagent B 1 mL
HI 93737C-0 Indicator Reagent C 2 mL
HI 93737D-0 Fixing Reagent D 2 mL
HI 93703-51 Dispersing Agent 4-6 drops

REAGENT SETS

HI 93737-01 Reagents for 50 tests
HI 93737-03 Reagents for 150 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the

Note: for best results perform your tests between 20-24°C.

Silver

method using the procedure described in the

Method Selection

section (see page 12).

• Fill two graduated beakers with 25 mL of sample.

• Add 1.0 mL of HI 93737A-0 Buffer reagent to one beaker

(the blank) and swirl gently to mix.

41

# 1 # 2

# 1

Silver

• Add exactly 1.0 mL of HI 93737B-0 Buffer reagent to the second

beaker (the sample) and swirl gently to mix. Press Timer and the
display will show the countdown prior to adding reagent C or,
alternatively, wait for 2 minutes.

• Then add exactly 1.0 mL of HI 93737C-0 Indicator reagent to

each beaker and swirl. Press Timer or, alternatively, wait for
2 minutes.

• Then, in both cases, add 1.0 mL of HI 93737D-0 Fixing reagent

to each beaker and swirl. Press Timer or, alternatively, wait for
2 minutes.

# 1

# 2

# 2

• Fill one cuvette up to the mark with 10 mL of the blank.

• Add 3 drops of Dispersing Agent (HI 93703-51), replace
the cap and invert gently to mix for about 10 seconds.

• Place the cuvette into the holder and close the lid.

Silver

42

# 2# 1

10 mL

# 1

# 1

• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for

measurement.

• Fill a second cuvette up to the mark with 10 mL of the reacted sample.

• Add 3 drops of Dispersing Agent (HI 93703-51),
replace the cap and invert gently to mix for about
10 seconds.

• Insert the second cuvette into the instrument.

# 2

• Press Read to start the reading. The instrument displays the results in mg/L of silver.

INTERFERENCES

Interference may be caused by:
Al3+ above 30 mg/L Fe2+ above 1.5 mg/L

Ca2+ above 1000 mg/L as CaCO3Fe3+ above 10 mg/L
Cd2+ above 20 mg/L K+ above 500 mg/L
Cl¯ above 8000 mg/L Mn2+ above 25 mg/L
Co2+ above 1.5 mg/L Mg2+ above 1000 mg/L as CaCO
Cr3+ above 20 mg/L Na+ above 5000 mg/L
Cr6+ above 40 mg/L Ni2+ above 1.5 mg/L
Cu2+ above 15 mg/L Pb2+ above 20 mg/L
F¯ above 20 mg/L Zn2+ above 30 mg/L

3

10 mL

# 2

43

Silver

ZINC

SPECIFICATIONS

Range 0.00 to 3.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.03 mg/L ±3% of reading at 25 °C
Typical EMC ±0.01 mg/L

Deviation
Light Source Tungsten lamp with narrow band interference filter @ 575 nm
Method Adaptation of the

18th edition,

orange to a dark violet tint in the sample.

REQUIRED REAGENT

Code Description Quantity

HI 93731A-0 Zinc Reagent 1 packet
HI 93731B-0 Cyclohexanone 0.5 mL

REAGENT SETS

HI 93731-01 Reagents for 100 tests
HI 93731-03 Reagents for 300 tests

For other accessories see page 49.

MEASUREMENT PROCEDURE

• Select the

Zinc

method using the procedure described in the

Standard Methods for the Examination of Water and Wastewater,

Zincon method. The reaction between zinc and the reagents causes an

Method Selection

section (see page 12).

• Fill one graduated mixing cylinder up to the 20 mL mark
with the sample.

• Add the content of one packet of HI 93731A-0 Zinc
reagent, close the cylinder and invert several times to mix
until completely dissolved.

• Fill one cuvette with 10 mL of the reacted sample up to
the mark.

Zinc

44

20 mL

10 mL

• Place the cap and insert the cuvette into the instrument
and close the lid.

• Press the Zero key. The display will show “-0.0-” when
the meter is zeroed and ready for measurement.

• Remove the cuvette and add 0.5 mL of HI 93731B-0
Cyclohexanone to the cuvette.

Note: To prevent any contamination from the polycarbonate
cap, prior to replacing it, close the sample cuvette with the
supplied HDPE plastic stopper.

• Replace the cap and mix the sample for 15 seconds.

• Insert the sample into the instrument.

• Press Timer and the display will show the countdown prior
to the measurement or, alternatively, wait for 3 minutes
and 30 seconds and press Read. When the timer ends the
meter will perform the reading.

• The instrument displays the results in mg/L of zinc.

INTERFERENCES

Interference may be caused by:
Aluminum above 6 mg/L
Cadmium above 0.5 mg/L
Copper above 5 mg/L
Iron above 7 mg/L
Manganese above 5 mg/L
Nickel above 5 mg/L

45

Zinc

ERRORS AND WARNINGS

The instrument shows clear warning messages when erroneous conditions appear and when measured values are
outside the expected range. These messages are described below.

No Light: The light source is not functioning properly.

Light Leak: There is an excess amount of ambient light reaching the

detector.

Inverted cuvettes: The sample and the zero cuvettes are inverted.

Battery Low: The battery capacity is lower than 10%.

Light Low: The instrument cannot adjust the light level. Please check

that the sample does not contain any debris.

Light High: There is too much light to perform a measurement. Please
check the preparation of the zero cuvette.

46

DATA MANAGEMENT

The analyzed data can be managed using Hanna’s product HI92000, Windows® Compatible Software.

Windows® is registered Trademark of "Microsoft Co."

47

STANDARD METHODS

Description Range Method

Aluminum 0.00 to 1.00 mg/L Aluminon
Chlorine, Free 0.00 to 2.50 mg/L DPD
Chlorine, Total 0.00 to 3.50 mg/L DPD
Chlorine Dioxide 0.00 to 2.00 mg/L Chlorophenol Red
Color of Water 0 to 500 PCU Colorimetric Platinum Cobalt
Oxygen, Dissolved 0.0 to 10.0 mg/L Winkler
pH 6.5 to 8.5 pH Phenol Red
Phosphate HR 0.0 to 30.0 mg/L Amino Acid
Phosphate LR 0.00 to 2.50 mg/L Ascorbic Acid
Silica 0.00 to 2.00 mg/L Heteropoly Blue
Silver 0.000 to 1.000 mg/L PAN

Zinc 0.00 to 3.00 mg/L Zincon

48

ACCESSORIES

REAGENT SETS

HI 93701-01 100 free chlorine tests (powder)
HI 93701-03 300 free chlorine tests (powder)
HI 93701-F 300 free chlorine tests (liquid)
HI 93701-T 300 total chlorine tests (liquid)
HI 93705-01 100 silica tests
HI 93705-03 300 silica tests
HI 93710-01 100 pH tests
HI 93710-03 300 pH tests
HI 93711-01 100 total chlorine tests (powder)
HI 93711-03 300 total chlorine tests (powder)
HI 93712-01 100 aluminum tests
HI 93712-03 300 aluminum tests
HI 93713-01 100 phosphate LR tests
HI 93713-03 300 phosphate LR tests
HI 93717-01 100 phosphate HR tests
HI 93717-03 300 phosphate HR tests
HI 93731-01 100 zinc tests
HI 93731-03 300 zinc tests
HI 93732-01 100 dissolved oxygen tests
HI 93732-03 300 dissolved oxygen tests
HI 93737-01 50 silver tests
HI 93737-03 150 silver tests
HI 93738-01 100 chlorine dioxide tests
HI 93738-03 300 chlorine dioxide tests

OTHER ACCESSORIES

HI 731318 cloth for wiping cuvettes (4 pcs)
HI 731321 glass cuvettes (4 pcs)
HI 731325W new cap for cuvette (4 pcs)
HI 740034 cap for 100 mL beaker (6 pcs)
HI 740036 100 mL plastic beaker (6 pcs)
HI 740038 60 mL glass bottle and stopper
HI 740142 1 mL graduated syringe
HI 740143 1 mL graduated syringe (6 pcs)
HI 740144 pipette tip (6 pcs)
HI 740157 plastic refilling pipette (20 pcs)
HI 740220 25 mL glass cylinders with caps (2 pcs)
HI 740223 170 mL plastic beaker
HI 740224 170 mL plastic beakers (12 pcs)
HI 740225 60 mL graduated syringe
HI 740226 5 mL graduated syringe
HI 740227 filter assembly
HI 740228 filter discs (25 pcs)
HI 740229 100 mL graduated cylinder
HI 740230 230 mL demineralized water
HI 92000 Windows compatible software
HI 920013 PC connection cable
HI 93703-50 cuvette cleaning solution (230 mL)
HI 93703-54 dried resin (100 g)
HI 93703-55 activated carbon (50 pcs)

49

WARRANTY

All Hanna Instruments meters are warranted for two years against defects in workmanship and materials
when used for its intended purpose and maintained according to the instructions.

This warranty is limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered.
If service is required, contact your dealer. If under warranty, report the model number, date of purchase,

serial number and the nature of the failure. If the repair is not covered by the warranty, you will be notified
of the charges incurred.

If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization Number
from the Customer Service Department and then send it with shipment costs prepaid. When shipping any
instrument, make sure it is properly packaged for complete protection.

To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of
purchase.

Recommendations for Users

Before using these products, make sure that they are entirely suitable for your specific application and for the environment in which they are used.
Operation of these instruments may cause unacceptable interferences to other electronic equipments, this requiring the operator to take all necessary steps to

correct interferences.
Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance.
To avoid damages or burns, do not put the instrument in microwave ovens. For yours and the instrument safety do not use or store the instrument in hazardous

environments.

Hanna Instruments reserves the right to modify the design, construction and appearance of its products
without advance notice.

50

HANNA LITERATURE

Hanna publishes a wide range of catalogs and handbooks for an equally wide range of applications. The
reference literature currently covers areas such as:

• Water Treatment

• Process

• Swimming Pools

• Agriculture

• Food

• Laboratory

and many others. New reference material is constantly being added to the library.
For these and other catalogs, handbooks and leaflets contact your dealer or the Hanna Customer Service

Center nearest to you. To find the Hanna Office in your vicinity, check our home page at www.hannainst.com.

51

Hanna Instruments Inc.

Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA

Technical Support for Customers

Tel. [phone]
Fax [phone]
E-mail [e-mail]
www.hannainst.com

Local Sales and Customer Service Office

Printed in EUROPE

(ROMANIA)

MAN83210 04/10

52