HANNA LITERATUREHANNA LITERATURE
HANNA LITERATURE
HANNA LITERATUREHANNA 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
• Thermometry
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.
Instruction Manual
MULTIPARAMETER
ION SPECIFIC METERS
www.hannainst.com
MANISMMPR4
09/03
Manufacturers since 1978
These Instruments are in
Compliance with the CE Directives
Dear Customer,
Thank you for choosing a Hanna product. Please read this instruction
manual carefully before using the meter. 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 tech@hannainst.com. These instruments are in compliance
with directives.
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
PRELIMINARY EXAMINATION ................................................................................. 3
GENERAL DESCRIPTION ......................................................................................... 3
PRINCIPLE OF OPERATION ..................................................................................... 3
DISPLAY CODE GUIDE ............................................................................................ 5
TIPS FOR AN ACCURATE MEASUREMENT ............................................................... 6
COMMON SPECIFICATIONS ................................................................................... 6
HI 93710 - pH/CHLORINE .....................................................................................7
HI 93724 - CYANURIC ACID/pH............................................................................. 9
HI 93725 - pH/TOTAL HARDNESS ........................................................................ 11
HI 93741 - TOTAL HARDNESS/IRON LOW RANGE.................................................. 13
HI 93742 - IRON LOW RANGE/MANGANESE LOW RANGE......................................15
HI 93743 - IRON LOW RANGE/pH........................................................................19
HI 93744 - pH/TOTAL HARDNESS/IRON LOW RANGE ............................................ 21
HI 93745 - pH/FREE & TOTAL CHLORINE
TOTAL HARDNESS/IRON LOW RANGE............................................... 23
C 101 - pH/FREE & TOTAL CHLORINE/CYS/IODINE/BROMINE
IRON LOW RANGE ......................................................................... 26
C 104 - pH/FREE & TOTAL CHLORINE/CYS ........................................................... 29
BROMINE MEASUREMENT ...................................................................................32
FREE CHLORINE MEASUREMENT ......................................................................... 34
TOTAL CHLORINE MEASUREMENT ........................................................................36
CYANURIC ACID MEASUREMENT.......................................................................... 38
HARDNESS MEASUREMENT .................................................................................39
IODINE MEASUREMENT ....................................................................................... 42
IRON LOW RANGE MEASUREMENT ...................................................................... 44
pH MEASUREMENT ............................................................................................. 46
BATTERY REPLACEMENT ....................................................................................... 47
ACCESSORIES ..................................................................................................... 48
WARRANTY ......................................................................................................... 49
OTHER ISM FROM HANNA...................................................................................50
CE DECLARATION OF CONFORMITY ......................................................................51
Potassium HI 93750 0.0 to 50.0 mg/L Tetraphenylborate
Sulfate HI 93751 0 to 150 mg/L Turbidimetric
Silica HI 93705 0.00 to 2.00 mg/L Heteropoly Blue
Silver HI 93737 0.000 to 1.000 mg/L PAN
Zinc HI 93731 0.00 to 3.00 mg/L Zincon
CE DECLARATION OF CONFORMITYCE DECLARATION OF CONFORMITY
CE DECLARATION OF CONFORMITY
CE DECLARATION OF CONFORMITYCE DECLARATION OF CONFORMITY
Recommendations for Users
Before using these products, make sure that they are entirely suitable for the environment in which
they are used.
Operation of these instruments in residential area could cause unacceptable interferences to radio and
TV equipments, 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 perform any measurement in microwave ovens.
2
51
OTHER ISM FROM HANNAOTHER ISM FROM HANNA
OTHER ISM FROM HANNA
OTHER ISM FROM HANNAOTHER ISM FROM HANNA
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
Single-parameter Colorimeters
Description Code Range Method
Aluminum HI 93712 0.00 to 1.00 mg/L Aluminon
Ammonia LR HI 93700 0.00 to 3.00 mg/L Nessler
Ammonia MR HI 93715 0.00 to 9.99 mg/L Nessler
Ammonia HR HI 93733 0.0 to 50.0 mg/L Nessler
Bromine HI 93716 0.00 to 8.00 mg/L DPD
Calcium HR 0 to 400 mg/L Oxalate
& Magnesium HR HI 93752 0 to 150 Calmagite
Chlorine, Free HI 93701 0.00 to 2.50 mg/L DPD
Chlorine, Total HI 93711 0.00 to 3.50 mg/L DPD
Chlorine, Free HR 0.00 to 9.99 mg/L DPD
& Total HR HI 93734 0.00 to 9.99 mg/L DPD
Chlorine Dioxide HI 93738 0.00 to 2.00 mg/L Chlorophenol Red
Chloride HI 93753 0.0 to 20.0 mg/L Mercury (II) Thiocyanate
Chromium VI, LR HI 93749 0 to 300 µg/L Diphenylcarbohydrazide
Chromium VI, HR HI 93723 0 to 1000 µg/L Diphenylcarbohydrazide
Color of Water HI 93727 0 to 500 PCU Colorimetric Platinum Cobalt
Copper, LR HI 93747 0 to 990 µg/L Porphyrin
Copper, HR HI 93702 0.00 to 5.00 mg/L Bicinchoninate
Cyanide HI 93714 0.000 to 0.200 mg/L Pyridine-Pyrazalone
Cyanuric Acid HI 93722 0 to 80 mg/L Turbidimetric
Fluoride HI 93729 0.00 to 2.00 mg/L SPADNS
Fluoride, HR HI 93739 0.0 to 20.0 mg/L SPADNS
Hardness, Ca HI 93720 0.00 to 2.70 mg/L Calmagite/colorimetric
Hardness, Mg HI 93719 0.00 to 2.00 mg/L EDTA/colorimetric
Hardness, Total HI 93735 0 to 750 mg/L Calmagite
Hydrazine HI 93704 0 to 400 µg/L p-Dimethylaminobenzaldehyde
Iodine HI 93718 0.0 to 12.5 mg/L DPD
Iron, LR HI 93746 0 to 400 µg/L TPTZ
Iron, HR HI 93721 0.00 to 5.00 mg/L Phenantroline
Manganese, LR HI 93748 0 to 300 µg/L PAN
Manganese, HR HI 93709 0.0 to 20.0 mg/L Periodate Oxidation
Molybdenum HI 93730 0.0 to 40.0 mg/L Mercaptoacetic Acid
Nickel LR HI 93740 0.000 to 1.000 mg/L PAN
Nickel HR HI 93726 0.00 to 7.00 g/L Photometric
Nitrate HI 93728 0.0 to 30.0 mg/L Cadmium Reduction
Nitrite, LR HI 93707 0.00 to 0.35 mg/L Diazotization
Nitrite, HR HI 93708 0 to 150 mg/L Ferrous Sulfate
pH HI 93710 5.9 to 8.5 pH Phenol Red
Phosphate, LR HI 93713 0.00 to 2.50 mg/L Ascorbic Acid
Phosphate, HR HI 93717 0.0 to 30.0 mg/L Amino Acid
Phosphorus HI 93706 0.0 to 15.0 mg/L Amino Acid
Remove the instrument from the packing material and examine it
carefully to make sure that no damage has occurred during shipment. If there is any damage, notify your Dealer.
Each Ion Specific Meter is supplied complete with:
• 9V Battery
• Two Sample Cuvets and Caps*
• One Transport Cap
Note: Save all packing material until you are sure that the instru-
ment functions correctly. Any defective item must be returned
in its original packing with the supplied accessories.
* HI 93725 is supplied with 3 cuvets and caps
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
The Hanna Instruments Ion Specific Meters are portable, microprocessor-based colorimeters that measure the ion content in water and
waste waters.
The meters use an exclusive positive-locking system to ensure that the
cuvet is in the same place every time it is placed into the measurement cell.
The reagents are in liquid or powder form and are supplied in bottles
or in packets. The amount of reagent is precisely dosed to ensure
maximum repeatability.
Display codes aid the user in routine operations.
The meters have an auto-shut off feature that will turn the meter off
after 10 minutes of non-use.
PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION
PRINCIPLE OF OPERATION
PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION
The color of every object we see is determined by a process of
absorption and emission of the electromagnetic radiation (light) of its
molecules.
Colorimetric analysis is based on the principle that specific compounds
react with others and form a color, the intensity of which is
proportional to the concentration of the substance to be measured.
When a substance is exposed to a beam of light of intensity Io, a
portion of the radiation is absorbed by the substance's molecules and
a radiation of intensity I, lower than Io, is emitted.
50
3
The quantity of radiation absorbed is given by the Lambert-Beer
Law:
log Io/I = ελ c d
Where log Io/I = Absorbance (A)
ελ= molar extinction coefficient of the substance at
wavelength λ
c = molar concentration of the substance
d = optical distance light travels through sample
Therefore, the concentration "c" can be calculated from the color
intensity of the substance determined by the emitted radiation I, as
the other factors are known.
LED
EMITTED LIGHT
CUVET MICROPROCESSOR
BLOCK DIAGRAM OF A COLORIMETER
LIGHT
DETECTOR
A monochromatic LED (Light Emitting Diode) emits radiation at a
single wavelength, supplying the system with the intensity Io.
Since a substance absorbs the color complimentary to the one it emits
(for example, a substance appears yellow because it absorbs blue
light), Hanna colorimeters use LEDs that emit the appropriate
wavelength to measure the sample.
The optical distance (d) is measured by the diameter of the cuvet
containing the sample.
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 done in two phases: setting the meter to
zero and the actual measurement.
The cuvet 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) cuvets are optically identical to provide the same measurement conditions. Whenever possible use the same cuvet for both.
It is also necessary that the cuvet's surface is clean and not scratched,
in order to avoid measurement interference due to unwanted reflection and absorption of light.
WARRANTYWARRANTY
WARRANTY
WARRANTYWARRANTY
All Hanna Instruments meters are warranted for two years
against defects in workmanship and materials when used for their
intended purpose and maintained according to instructions.
This warranty is limited to repair or replacement free of charge.
Damages due to accidents, misuse, tampering or lack of prescribed
maintenance are not covered.
If service is required, contact the dealer from whom you purchased the
instrument. 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.
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.
Hanna Instruments reserves the right to modify the design,
construction and appearance of its products without advance notice.
4
49
ACCESSORIESACCESSORIES
ACCESSORIES
ACCESSORIESACCESSORIES
REAGENT SETS
HI 93701-01 100 free chlorine tests
HI 93701-03 300 free chlorine tests
HI 93701-F 300 free chlorine tests (liquid version)
HI 93701-T 300 total chlorine tests (liquid version)
HI 93710-01 100 pH tests
HI 93710-03 300 pH tests
HI 93711-01 100 total chlorine tests
HI 93711-03 300 total chlorine tests
HI 93716-01 100 bromine tests
HI 93716-03 300 bromine tests
HI 93718-01 100 iodine tests
HI 93718-03 300 iodine tests
HI 93719-01 100 Mg hardness tests
HI 93719-03 300 Mg hardness tests
HI 93722-01 100 cyanuric acid tests
HI 93722-03 300 cyanuric acid tests
HI 93746-01 50 iron LR tests
HI 93746-03 150 iron LR tests
HI 93748-01 50 manganese LR tests
HI 93748-03 150 manganese LR tests
OTHER ACCESSORIES
HI 710009 Blue rubber boot
HI 710010 Orange rubber boot
HI 721310 9V battery (10 pcs)
HI 731318 Tissue for wiping cuvets (4 pcs)
HI 731321 Glass cuvets (4 pcs)
HI 731325 Cap for cuvet (4 pcs)
HI 93703-50 Cuvets cleaning solution (230 mL)
MANISMMPR3 Instruction manual
It is recommended not to touch the cuvet walls with hands.
Furthermore, in order to maintain the same conditions during the
zeroing and the measuring phases, it is necessary to close the cuvet
to prevent any contamination.
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
DISPLAY CODE GUIDE
DISPLAY CODE GUIDEDISPLAY CODE GUIDE
This indicates that the meter is in a ready state
and zeroing can be performed.
Sampling in Progress. This prompt appears each
time the meter is performing a measurement.
This indicates that the meter is in a zeroed state
and measurement can be performed.
A zero reading was not taken. Insert a sample
before adding reagent and press ZERO.
Under range. A blinking "0.00" indicates that the
sample absorbs less light than the zero reference.
Check the procedure and make sure you use the
same cuvet for reference (zero) and measurement.
Over range. A flashing value higher than the
maximum concentration readable (see specifications) indicates that the sample absorbs too much
light, meaning that the concentration is too high.
Dilute the sample.
Light over range. The cuvet is not inserted correctly
and an excess ambient light is reaching the
detector. If the cover is properly installed, then
contact your dealer or the nearest Hanna Customer
Service Center.
Light under range. The zero sample is too dark for
proper zeroing. If this is not the case, contact your
dealer or the nearest Hanna Customer Service
Center.
V
The "V" indicates that the battery voltage is
getting low and the battery needs to be replaced.
This indicates that the battery is dead and must
be replaced.
Note: once this indication is displayed, the meter
will lockup. Change the battery to restart.
48
5
TIPS FOR AN ACCURATE MEASUREMENTTIPS FOR AN ACCURATE MEASUREMENT
E
TIPS FOR AN ACCURATE MEASUREMENT
TIPS FOR AN ACCURATE MEASUREMENTTIPS FOR AN ACCURATE MEASUREMENT
BATTERY REPLACEMENTBATTERY REPLACEMENT
BATTERY REPLACEMENT
BATTERY REPLACEMENTBATTERY REPLACEMENT
The instruction listed below should be carefully followed during testing
to ensure best accuracy.
• Do not let the test sample stand too long after reagent is added or
accuracy will be lost.
• Whenever the cuvet is placed into the measurement cell, it must be
completely free of fingerprints, oil or dirt. Wipe it thoroughly with
HI 731318 or a lint-free cloth prior to insertion.
• It is important that the sample does not contain any debris. This
would corrupt the readings.
• Each time the cuvet is used, the cap must be tightened to the
same degree.
• It is possible to take multiple readings in a row, but it is
recommended that a zero reading be taken for each sample and
that the same cuvet is used for zeroing and measurement.
• It is important to discard the sample immediately after the
reading is taken because the glass might become permanently
stained.
• Shaking the cuvet can generate bubbles in the sample, causing
higher readings. To obtain accurate measurements, remove such
bubbles by swirling or by gently tapping the vial.
• All the reaction times reported in this manual are referred to
20°C (68°F). As a general rule of thumb, they should be doubled
at 10°C (50°F) and halved at 30°C (86°F).
To prolong battery life, switch your meter off after use. However, the
meter has an auto-shut off feature that will turn itself off after 10
minutes of non-use.
A "V" on the LCD indicates low voltage and the
battery should be replaced.
If the battery is not replaced immediately, in
order to prevent erroneous readings due to low
voltage "-BA-" is displayed soon afterwards.
At this point, the meter will completely lockup and will not allow any
commands and the display will go blank.
Battery replacement must only take place in a non-hazardous area
using a 9V alkaline battery.
Simply slide off the battery cover on the back of the meter. Detach the
battery from the terminals and attach a fresh 9V battery while
paying attention to the correct polarity. Replace the battery and the
cover.
V
9V
SLID
OFF
COMMON SPECIFICATIONSCOMMON SPECIFICATIONS
COMMON SPECIFICATIONS
COMMON SPECIFICATIONSCOMMON SPECIFICATIONS
All the ion specific meters in this manual have the following common
features:
Light Life Life of the instrument
Light Detector Silicon Photocell
Environment 0 to 50°C (32 to 122°F);
max 95% RH non-condensing
Battery Type/Life 1 x 9 volt/40 hours
Auto-Shut off After 10' of non-use
Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x 1.8")
Weight 290 g (10 oz.)
6
The meter will turn on automatically when a new
battery is connected. You can turn it off by pressing
ON/OFF.
47
ON
OFF
pp
H MEASUREMENTH MEASUREMENT
p
H MEASUREMENT
pp
H MEASUREMENTH MEASUREMENT
HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine
HI 93710 - pH & Chlorine
HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine
10 mL
• Fill the cuvet up to the mark with 10 mL of
unreacted sample and replace the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and “SIP” will appear on the display.
ZERO
• Wait for a few seconds and the display will
show “-0.0-”. Now the meter is zeroed and
ready for measurement.
• Remove the cuvet and add 5
drops of the HI 93710 Phenol
Red Indicator. Replace the cap
x 5
and swirl the solution.
• Reinsert the cuvet into the instrument.
• Press the READ key and “SIP” will appear on the display during
measurement.
• The instrument directly displays the pH measured value on the
Liquid Crystal Display.
The HI 93710 meter measures both pH and chlorine (Cl2, free and
total) content in water and wastewater in the following ranges:
pH 5.9 to 8.5 pH units
Free Chlorine 0.00 to 2.50 mg/L (ppm)
Total Chlorine 0.00 to 3.50 mg/L (ppm).
SPECIFICATIONS
Range pH 5.9 to 8.5
Free Cl20.00 to 2.50 mg/L
Total Cl20.00 to 3.50 mg/L
Resolution 0.1 pH/0.01 mg/L Cl
2
Accuracy ±0.1 pH
±0.03 mg/L ±3% of Cl2 reading
Typical EMC ±0.2 pH
Deviation ±0.02 mg/L Cl
2
Light Source Light Emitting Diode @ 555 nm
Method Adaptation of the EPA recommended DPD method
330.5 for chlorine analysis. The reaction with
reagents causes a pink tint in the sample.
For pH, Phenol red method. The reaction with
reagents causes a red tint in the sample.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93701-0 Free Cl
DPD 1 packet
2
HI 93710
pH
46
7
pH/Chlorine
HI 93711-0 Total Cl
DPD 1 packet
2
Liquid version (chlorine):
Code Unit Description Quantity
HI 93701A-F Free Cl
HI 93701B-F Free Cl
HI 93701A-T Total Cl
HI 93701B-T Total Cl
HI 93701C-T Total Cl
2
2
2
2
2
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD3 solution 1 drop
REAGENT SETS
HI 93701-01 Reagents for 100 free chlorine tests
HI 93701-03 Reagents for 300 free chlorine tests
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93711-01 Reagents for 100 total chlorine tests
HI 93711-03 Reagents for 300 total chlorine tests
HI 93701-F Reagents for 300 free chlorine tests (liquid version)
HI 93701-T Reagents for 300 total chlorine tests (liquid version)
For other accessories see page 48.
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
ON
OFF
• The meter will automatically default to pH measurement mode.
• When the LCD displays “- - -”, it is ready.
pH
pH MEASUREMENTS
In order to perform pH measurements, follow the procedure on
page 46.
CHLORINE MEASUREMENTS
• Press the pH/CL range key to select the chlorine scale. “C” will
appear on the LCD.
• Follow the procedures on page 34 and 36.
Note: Free and total chlorine have to be measured separately
following the indicated procedure with fresh unreacted samples
if both values are requested.
• Fill a cuvet with 10 mL of the reacted
sample up to the mark and replace the
cap. This is the sample.
10 mL
• Insert the sample into the instrument.
• Wait for 3 minutes and then press READ. "SIP" will appear
during measurement.
• The instrument directly displays concentration in µg/L of iron on
the Liquid Crystal Display.
NoteNote
Note: For better accuracy wash glassware with HCl 6N.
NoteNote
INTERFERENCES
Interference may be caused by:
Cadmium above 4.0 mg/L
3+
Chromium
Chromium
Cobalt above 0.05 mg/L
Copper above 0.6 mg/L
Cyanide above 2.8 mg/L
Manganese above 50.0 mg/L
Mercury above 0.4 mg/L
Molybdenum above 4.0 mg/L
Nickel above 1.0 mg/L
Nitrite ion above 0.8 mg/L
Sample pH should be between 3 and 4 to avoid developed color to
fade or turbidity.
above 0.25 mg/L
6+
above 1.2 mg/L
HI 93710
pH/Chlorine
8
45
Iron LR
IRON LOW RANGE IRON LOW RANGE
IRON LOW RANGE
IRON LOW RANGE IRON LOW RANGE
MEASUREMENTMEASUREMENT
MEASUREMENT
MEASUREMENTMEASUREMENT
• Fill one graduated mixing cylinder up to the
25 mL mark with deionized water.
• Add the content of one packet of HI 93746 TPTZ reagent, close
the cylinder and agitate for 30 seconds. This is the blank.
30"
12
9
3
6
HI 93724 - Cyanuric Acid & pHHI 93724 - Cyanuric Acid & pH
HI 93724 - Cyanuric Acid & pH
HI 93724 - Cyanuric Acid & pHHI 93724 - Cyanuric Acid & pH
The HI 93724 meter measures cyanuric acid and pH content in water
and wastewater in the following ranges: 0 to 80 mg/L for Cyanuric
Acid (CYS) and 5.9 to 8.5 for pH.
• Fill a cuvet with 10 mL of the blank up
10 mL
to the mark and let it sit for 3 minutes.
• Replace the cap, insert the blank into
the holder and make sure that the notch
on the cap is positioned securely into
the groove.
• Press ZERO and "SIP" will appear on the display.
ZERO
• Wait for a few seconds and the display will
show "-0.0-". Now the meter is zeroed and
ready for measurement.
• Fill one graduated mixing cylinder up to the
25 mL mark with the sample.
• Add the content of one packet of HI 93746 TPTZ reagent, close
the cylinder and agitate for 30 seconds.
30"
12
9
3
6
SPECIFICATIONS
Range CYS 0 to 80 mg/L
pH 5.9 to 8.5
Resolution CYS 1 mg/L
pH 0.1
Accuracy CYS ±1 mg/L ±15% of reading
pH ±0.1
Typical EMC CYS ±1 mg/L
Deviation pH ±0.1
Light Source Light Emitting Diode @ 555 nm
Method For pH, Phenol Red method. The reaction with
reagent causes a red tint in the sample.
For cyanuric acid, adaptation of the turbidimet-
ric method. The reaction between cyanuric acid
and the reagent causes a white suspension in
the sample.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93722-0 CYS Powder Reagent 1 packet
Iron LR
44
HI 93724
9
Cyanuric A. & pH
REAGENT SETS
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93722-01 Reagents for 100 CYS tests
HI 93722-03 Reagents for 300 CYS tests
For other accessories see page 48.
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
ON
OFF
• The meter will automatically default to pH measurement mode.
• When the LCD displays “- - -”, it is ready.
pH
pH MEASUREMENTS
In order to perform pH measurements, follow the procedure on
page 46.
CYANURIC ACID MEASUREMENTS
• Press the pH/CYS key to select the cyanuric acid scale. “pH” will
disappear from the LCD.
• Follow the procedure on page 38.
INTERFERENCES
Interference may be caused by:
Bromine
Chlorine
Ozone
Oxidized forms of chromium and manganese
Alkalinity above 300 mg/L and acidity above 150 mg/L as CaCO
require neutralization since the color could instantly fade. To resolve
this, neutralize the sample with diluted HCl or NaOH.
In case of water with hardness greater than 500 mg/L CaCO3, shake
the sample for approximately 1 minute after adding the reagent.
3
HI 93724
Cyanuric A. & pH
10
43
Iodine
IODINE MEASUREMENTIODINE MEASUREMENT
IODINE MEASUREMENT
IODINE MEASUREMENTIODINE MEASUREMENT
HI 93725 - pH & Total HardnessHI 93725 - pH & Total Hardness
HI 93725 - pH & Total Hardness
HI 93725 - pH & Total HardnessHI 93725 - pH & Total Hardness
• Fill the cuvet up to the mark with 10 mL of
10 mL
unreacted sample and replace the cap.
• Place the cuvet into the holder and ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and "SIP" will appear on the display.
ZERO
• Wait for a few seconds and the display will
show "-0.0-". Now the meter is zeroed and
ready for measurement.
• Remove the cap and add the content of
one packet of HI 93718 reagent. Replace the cap and shake gently.
• Reinsert the cuvet into the instrument.
• Wait for 2 minutes and 30 seconds and press READ. "SIP" will
appear during measurement.
• The instrument directly displays concentration in mg/L of iodine
on the Liquid Crystal Display.
The HI 93725 meter measures pH and Magnesium/Calcium and Total
Hardness content in water and wastewater.
SPECIFICATIONS
Range pH 5.9 to 8.5
Mg Hardness 0.00 to 2.00 mg/L
Ca Hardness 0.00 to 2.70 mg/L
Total Hardness 0.00 to 4.70 mg/L
Resolution pH 0.1
Hardness 0.01 mg/L
Accuracy pH ±0.1
Hardness ±0.11 mg/L ±5% of reading)
Typical EMC pH ±0.1
Deviation Hardness ±0.02 mg/L
Light Source Light Emitting Diode @ 555 nm
Method For pH, Phenol red method. The reaction with
reagent causes a red tint in the sample.
For total hardness, adaptation of the Standard
Methods for the Examination of Water and
Wastewater, 18th edition, Calmagite/colorimet-
ric method. The reaction between hardness and
reagents causes a maroon tint in the sample.
Iodine
42
11
HI 93725
pH & Total Hardness
REQUIRED REAGENTS
Code Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93719A-0 Ca & Mg indicator 0.5 mL
HI 93719B-0 Alkali solution 0.5 mL
HI 93719C-0 EDTA solution 1 drop
HI 93719D-0 EGTA solution 1 drop
REAGENT SETS
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93719-01 Reagents for 100 hardness tests
HI 93719-03 Reagents for 300 hardness tests
For other accessories see page 48.
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
ON
OFF
• The meter will automatically default to pH measurement mode.
• When the LCD displays “- - -”, it is ready.
pH
pH MEASUREMENTS
In order to perform pH measurements, follow the procedure on
page 46.
HARDNESS MEASUREMENTS
• Press pH/HARDNESS to select the Hardness range (the LCD
displays "ZER1").
• Pressing READ will result in the meter scrolling
through the hardness concentration in mg/L
(ppm) by first displaying the Magnesium (n),
then the Calcium (C) and then the Total (t).
• By pressing ZERO the meter will be reset and be
ZERO
ready for another test of Hardness.
SAMPLE DILUTION
This meter is designed to determine low levels of hardness, typically
found in water purification systems.
When testing some other sources of water, it is not uncommon to come
across levels of hardness that are greater than the range of this
meter.
This problem can be overcome through dilution. Dilutions must be
performed with hardness-free water or the readings will be erroneous.
A dilution to reduce the level of hardness by a factor of one hundred
is performed as follows:
• Fill a 1 mL syringe with the sample.
• Place the syringe in a 50 mL beaker, making sure that the
beaker is clean and empty, and inject 0.5 mL into the beaker.
• Fill the beaker up to the 50 mL mark with hardness-free water.
Now, follow normal measurement procedure. The true value of the
sample is the reading obtained multiplied by a factor of one hundred
(the dilution factor).
For your reference, factors to convert readings in mg/L to French
degrees (FD), German degrees (DD) and English degrees (ED) of
hardness are as follows:
1 mg/L = 0.1 FD = 0.056 DD = 0.07 ED.
• Follow the procedure on page 39.
HI 93725
pH & Total Hardness
12
INTERFERENCES
Interference may be caused by excessive amounts of heavy metals.
41
Hardness
• Nothing is added to the third cuvet.
ZERO1
• Place the ZERO1 sample into the holder
and ensure that the notch on the cap
is positioned securely into the groove.
• Press ZERO; "SIP" will appear during measurement, then the
instrument will display "ZER2".
ZERO
ZERO2
• Remove the ZERO1 sample and insert
the ZERO2 sample into the instrument.
• Press ZERO again; "SIP" will appear during measurement, then
the instrument will display the level of Magnesium hardness in
ppm CaCO3 (together with "n").
ZERO
HI 93741HI 93741
HI 93741
HI 93741HI 93741
Total Hardness & Iron Low RangeTotal Hardness & Iron Low Range
Total Hardness & Iron Low Range
Total Hardness & Iron Low RangeTotal Hardness & Iron Low Range
The HI 93741 meter measures the Iron (Fe) content and the Magnesium (Mg), Calcium (Ca) and Total Hardness in water and wastewater.
3rd CUVET
• Remove the ZERO2 sample and insert
the third cuvet into the instrument.
• Press READ; "SIP" will appear during measurement, then the
instrument will display the concentration of Calcium in ppm CaCO
(together with "C").
• Press READ again; "SIP" will appear during measurement and
the instrument will display the total hardness concentration in
ppm CaCO3 (together with "t").
Hardness
40
SPECIFICATIONS
Range Fe 0 to 400 µg/L
Mg Hardness 0.00 to 2.00 mg/L
Ca Hardness 0.00 to 2.70 mg/L
Total Hardness 0.00 to 4.70 mg/L
Resolution Fe 1 µg/L
3
Accuracy Fe ±10 µg/L ±8% of reading
Typical EMC Fe ±1 µg/L
Deviation Hardness ±0.02 mg/L
Light Source Light Emitting Diode @ 555 nm
Method For Iron, Adaptation of the TPTZ Method. The
Hardness 0.01 mg/L
Hardness ±0.11 mg/L ±5% of reading
reaction between iron and the reagent causes a
blue tint in the sample.
For Hardness, adaptation of the Standard Meth-
ods for the Examination of Water and
Wastewater, 18th edition, Calmagite/colorimet-
ric method. The reaction between hardness and
reagents causes a maroon tint in the sample.
13
Total Hardness & Iron LR
HI 93741
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93746-0 Iron LR TPTZ Reagent 2 packets
HI 93719A-0 Hardness Ca & Mg indicator 0.5 mL
HI 93719B-0 Hardness Alkali solution 0.5 mL
HI 93719C-0 Hardness EDTA solution 1 drop
HI 93719D-0 Hardness EGTA solution 1 drop
REAGENT SETS
HI 93746-01 Reagents for iron LR (100 packets)
HI 93746-03 Reagents for iron LR (300 packets)
HI 93719-01 Reagents for 100 hardness tests
HI 93719-03 Reagents for 300 hardness tests
For other accessories see page 48.
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF. The meter
will automatically default to the iron measurement
mode and F will appear on the right to warn the
user.
• When the LCD displays “- - -”, it is ready.
OFF
ON
HARDNESS HARDNESS
HARDNESS
HARDNESS HARDNESS
MEASUREMENTMEASUREMENT
MEASUREMENT
MEASUREMENTMEASUREMENT
• Fill a graduated beaker up to the 50 mL mark
with the sample.
• Add 0.5 mL of HI 93719A Calcium
and Magnesium indicator solution and
mix.
• Add 0.5 mL of HI 93719B Alkali
solution for Calcium and Magnesium
and mix.
• Refer to the manual pages below to measure the appropriate
parameter and for the required reagents:
IRON LR MEASUREMENT
• See page 44.
HARDNESS MEASUREMENT
• Press SET to select the hardness scale. “ZER1”
will appear on the LCD; then see page 39.
HI 93741
Total Hardness & Iron LR
14
• Fill three cuvets up to the mark with
10 mL of sample each.
• Add 1 drop of HI 93719C EDTA solution to one cuvet, replace the cap and
swirl the solution. This is the ZERO1
sample.
• Add 1 drop of HI 93719D EGTA solution to the second cuvet, replace the
cap and swirl the solution. This is the
ZERO2 sample.
39
10 mL
10 mL
10 mL
D
Hardness
CYANURIC ACID CYANURIC ACID
CYANURIC ACID
CYANURIC ACID CYANURIC ACID
• Fill the cuvet up to the mark with 10 mL of
MEASUREMENTMEASUREMENT
MEASUREMENT
MEASUREMENTMEASUREMENT
10 mL
sample and replace the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and "SIP" will appear on the display.
ZERO
• Wait for a few seconds and the display will
show "0". Now the meter is zeroed and ready
for measurement.
• Fill a beaker up to the
25 mL mark with the
sample, add the content of one packet of
HI 93722 reagent and
stir gently to mix.
10 mL
• Fill a second cuvet with 10 mL of the reacted
sample up to the mark. Replace the cap.
• Reinsert the cuvet into the instrument.
• Wait for 45 seconds and press READ. "SIP" will appear during
measurement.
45"
12
9
3
6
• The instrument directly displays concentration in mg/L of cyanuric
acid on the Liquid Crystal Display.
HI 93742 - HI 93742 -
HI 93742 -
HI 93742 - HI 93742 -
Manganese Low RangeManganese Low Range
Manganese Low Range
Manganese Low RangeManganese Low Range
Iron Low Range andIron Low Range and
Iron Low Range and
Iron Low Range andIron Low Range and
The HI 93742 meter measures the iron and manganese content in
water, wastewater and seawater (iron only) in the following ranges:
Iron 0 to 400 µg/L (ppb)
Manganese 0 to 300 µg/L (ppb).
SPECIFICATIONS
Range Fe 0 to 400 µg/L
Mn 0 to 300 µg/L
Resolution 1 µg/L
Accuracy Fe ±10 µg/L ±8% of reading
Mn ±2 µg/L ±3% of reading
Typical EMC ±1 µg/L
Deviation
Light Source Light Emitting Diode @ 555 nm
Method Adaptation of the TPTZ method for iron and
PAN method for manganese. The reaction between iron or manganese and the reagents
respectively causes a blue or an orange tint in
the sample.
REQUIRED REAGENT
Code Description Quantity
Iron
HI 93746-0 TPTZ reagent 2 packets
Cyanuric Acid
38
15
HI 93742
Iron LR/Manganese LR
Manganese
HI 93748A-0 Ascorbic acid 2 packets
HI 93748B-0 Alkaline-cyanide solution 0.40 mL
HI 93748C- 0 0.1% PAN indicator 2 mL
HI 93703-51 Dispersing Agent 4-6 drops (only
when necessary, see note)
REAGENT SETS
HI 93746-01 Reagents for 50 iron LR tests
HI 93746-03 Reagents for 150 iron LR tests
HI 93748-01 Reagents for 50 manganese LR tests
HI 93748-03 Reagents for 150 manganese LR tests
For other accessories see page 48.
Liquid reagent procedure
• Add 3 drops of HI 93701A-T DPD1 indicator, 3 drops of
HI 93701B-T DPD1 buffer and 1 drop of HI 93701-C t o another
cuvet. Shake gently before adding 10 mL of unreacted sample.
Replace the cap and shake gently again.
x 3 x 3
x 1
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
• When the LCD displays "- - -", it is ready.
IRON MEASUREMENTS
• Select the iron parameter by pressing the Fe/
Mn key until "F" appears on the display.
• Follow the procedure on page 44.
Fe
Mn
MANGANESE MEASUREMENTS
• Select the manganese parameter by pressing the Fe/Mn
key until "n" appears on the
display.
• Fill one cuvet up to the mark with 10 mL of
deionized water.
• Fill a second cuvet up to the mark with 10 mL
of sample.
Fe
Mn
ON
OFF
10 mL
10 mL
• Reinsert the cuvet into the instrument.
• Wait for approximately 30 seconds and then press READ. The
display will show "SIP" during measurement.
• The instrument directly displays concentration in mg/L of free or
total chlorine on the Liquid Crystal Display.
Note: Free and total chlorine have to be measured separately with
fresh unreacted samples following the above procedure if both
values are requested.
INTERFERENCES
Interference may be caused by:
Bromine, Iodine, Fluorine, Ozone, Oxidized manganese and Chro-
mium.
In case of water with hardness greater than 500 mg/L CaCO3, shake
the sample for approximately 1 minute after adding the reagent.
Alkalinity above 250 mg/L or acidity above 150 mg/L will not
reliably develop the full amount of color or it may rapidly fade. To
resolve this, neutralize the sample with diluted HCl or NaOH.
HI 93742
Iron LR/Manganese LR
16
37
Total Chlorine
TOTAL CHLORINE MEASUREMENTTOTAL CHLORINE MEASUREMENT
TOTAL CHLORINE MEASUREMENT
TOTAL CHLORINE MEASUREMENTTOTAL CHLORINE MEASUREMENT
• Fill the cuvet up to the mark with 10 mL of
unreacted sample and replace the cap.
10 mL
• Add the content of one packet of
HI 93748A ascorbic acid to each
cuvet, replace the caps and shake
gently.
A
8
4
7
3
I9
H
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and "SIP" will appear on the display.
ZERO
• Wait for a few seconds and the display will
show "-0.0-". Now the meter is zeroed and
ready for measurement.
Powder reagents procedure
• Remove the cuvet and add one packet of DPD Total
Chlorine reagent. Replace the cap and shake gently.
• Reinsert the cuvet into the instrument.
• Wait for 2 minutes and 30 seconds and then press READ. The
display will show "SIP" during measurement.
• Add 0.2 mL of the
HI 93748B alkalinecyanide reagent
solution to each cuvet, replace the
B
caps and shake gently.
• Add 1 mL of the HI 93748C
0.1% PAN indicator solution
1
1
7
3
I 9
H
to each cuvet, replace the
caps and shake gently.
C
• Place the cuvet with the reacted deionized water (blank) into the holder
and ensure that the notch on the cap
is positioned securely into the groove.
• Wait for 2 minutes and press ZERO. "SIP" will appear during
zeroing.
ZERO
2’
12
9
3
6
• The instrument directly displays concentration in mg/L of total
chlorine on the Liquid Crystal Display.
Total Chlorine
• Wait for a few seconds and the display will
show "-0.0-". Now the meter is zeroed and
ready for measurement.
• Insert the second cuvet with the reacted
sample into the instrument.
17
HI 93742
Iron LR/Manganese LR36
• Press READ. "SIP" will appear during measurement.
• The instrument directly displays concentration in µg/L of manganese on the display.
Note: a temperature above 30°C may cause turbidity. In this case,
before zeroing and taking readings, add 2-3 drops of Dispersing Agent (HI 93703-51) to each cuvet and swirl until
complete dissolution of the turbidity.
INTERFERENCES
Manganese
Interference may be caused by:
Aluminum above 20 mg/L
Cadmium above 10 mg/L
Calcium above 200 mg/L as CaCO
Cobalt above 20 mg/L
Copper above 50 mg/L
Iron above 10 mg/L
Lead above 0.5 mg/L
Magnesium above 100 mg/L as CaCO
Nickel above 40 mg/L
Zinc above 15 mg/L.
3
3
• Reinsert the cuvet into the instrument.
• Wait for approximately 30 seconds and then press READ. The
display will show “SIP” during measurement.
• The instrument directly displays concentration in mg/L of free
chlorine on the Liquid Crystal Display.
Note: Free and total chlorine have to be measured separately with
fresh unreacted samples following the above procedure if both
values are requested.
INTERFERENCES
Interference may be caused by:
Bromine
Iodine
Fluorine
Ozone
Oxidized manganese and Chromium
In case of water with hardness greater than 500 mg/L CaCO3, shake
the sample for approximately 1 minute after adding the 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 could
disappear or develop only partially. To resolve this, neutralize the
sample with diluted HCl or NaOH.
HI 93742
Iron LR/Manganese LR
18
35
Free Chlorine
FREE CHLORINE MEASUREMENTFREE CHLORINE MEASUREMENT
FREE CHLORINE MEASUREMENT
FREE CHLORINE MEASUREMENTFREE CHLORINE MEASUREMENT
• Fill the cuvet up to the mark with
10 mL of unreacted sample and
replace the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
10 mL
HI 93743HI 93743
HI 93743
HI 93743HI 93743
Iron Low Range & pHIron Low Range & pH
Iron Low Range & pH
Iron Low Range & pHIron Low Range & pH
The HI 93743 meter measures the pH and the Iron (Fe) content in
water and wastewater.
• Press ZERO and "SIP" will ap-
ZERO
pear on the display.
• Wait for a few seconds and the display will
show "-0.0-". Now the meter is zeroed and
ready for measurement.
• Remove the cuvet.
Powder reagents procedure
• Add the content of one packet of HI 93701 DPD
reagent. Replace the cap and shake gently.
• Reinsert the cuvet into the instrument.
• Press READ and the display will
show "SIP" during measurement.
• The instrument directly displays concentration in mg/L of free
chlorine on the Liquid Crystal Display.
Liquid reagents procedure
• Add 3 drops of HI 93701A-F DPD1 indicator and 3 drops of
HI 93701B-F DPD1 buffer to another cuvet. Shake gently before
adding 10 mL of unreacted sample. Replace the cap and shake
gently again.
x 3 x 3
1
0
7
3
I 9
H
SPECIFICATIONS
Range Fe 0 to 400 µg/L
pH 5.9 to 8.5
Resolution Fe 1 µg/L
pH 0.1
Accuracy Fe ±10 µg/L ±8% of reading
pH ±0.1
Typical EMC Fe ±1 µg/L
Deviation pH ±0.1
Light Source Light Emitting Diode @ 555 nm
Method For Iron, Adaptation of the TPTZ Method. The
reaction between iron and the reagent causes a
blue tint in the sample.
For pH, Phenol red method. The reaction between pH and the reagent causes a red tint in
the sample.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93746-0 Iron LR TPTZ Reagent 2 packets
HI 93710-0 pH Phenol red 5 drops
Free Chlorine
34
19
HI 93743
Iron LR & pH
REAGENT SETS
HI 93746-01 Reagents for iron LR (100 packets)
HI 93746-03 Reagents for iron LR (300 packets)
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
For other accessories see page 48.
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF. The meter
will automatically default to the pH measurement
mode and pH will appear on the left to warn the
user.
• When the LCD displays “- - -”, it is ready.
• Refer to the manual pages below to measure the appropriate
parameter and for the required reagents:
ON
OFF
pH
pH MEASUREMENT
• See page 46.
IRON LR MEASUREMENT
• Press SET to select the iron scale. “F” will
appear on the LCD; then see page 44.
INTERFERENCES
Interference may be caused by:
Chlorine
Iodine
Ozone
Oxidized forms of chromium and manganese
Alkalinity above 300 mg/L and acidity above 150 mg/L as CaCO
require neutralization since the color could instantly fade. To resolve
this, neutralize the sample with diluted HCl or NaOH.
In case of water with hardness greater than 500 mg/L CaCO3, shake
the sample for approximately 1 minute after adding the reagent.
3
HI 93743
Iron LR & pH
20
33
Bromine
BROMINE MEASUREMENTBROMINE MEASUREMENT
BROMINE MEASUREMENT
BROMINE MEASUREMENTBROMINE MEASUREMENT
10 mL
• Fill the cuvet up to the mark with 10 mL of
unreacted sample and replace the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and "SIP" will appear on the display.
ZERO
• Wait for a few seconds and the display will
show "-0.0-". Now the meter is zeroed and
ready for measurement.
• Remove the cuvet and add the
content of one packet of HI 93716
reagent. Replace the cap and shake
gently.
• Reinsert the cuvet into the instrument.
• Wait for 2 minutes and 30 seconds and press READ. "SIP" will
appear during measurement.
• The instrument directly displays concentration in mg/L of bromine
on the Liquid Crystal Display.
HI 93744HI 93744
HI 93744
HI 93744HI 93744
pH/Total Hardness/Iron Low RangepH/Total Hardness/Iron Low Range
pH/Total Hardness/Iron Low Range
pH/Total Hardness/Iron Low RangepH/Total Hardness/Iron Low Range
The HI 93744 meter measures the pH, the Magnesium (Mg), Calcium
(Ca) and Total Hardness and the Iron (Fe) content in water and
wastewater.
SPECIFICATIONS
Range pH 5.9 to 8.5
Fe 0 to 400 µg/L
Mg Hardness 0.00 to 2.00 mg/L
Ca Hardness 0.00 to 2.70 mg/L
Total Hardness 0.00 to 4.70 mg/L
Resolution pH 0.1
Fe 1 µg/L
Hardness 0.01 mg/L
Accuracy pH ±0.1
Fe ±10 µg/L ±8% of reading
Hardness ±0.11 mg/L ±5% of reading
Typical EMC pH ±0.2
Deviation Fe ±1 µg/L
Hardness ±0.02 mg/L
Light Source Light Emitting Diode @ 555 nm
Method For pH, Phenol red method. The reaction be-
tween pH and the reagent causes a red tint in
the sample.
For Iron, Adaptation of the TPTZ Method. The
reaction between iron and the reagent causes a
blue tint in the sample.
For Hardness, adaptation of the Standard Meth-
Bromine
32
21
HI 93744
Hardness/Iron LR/pH
ods for the Examination of Water and Wastewater, 18th edition, Calmagite/colorimetric
method. The reaction between hardness and
reagents causes a maroon tint in the sample.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93746-0 Iron LR TPTZ Reagent 2 packets
HI 93719A-0 Hardness Ca & Mg indicator 0.5 mL
HI 93719B-0 Hardness Alkali solution 0.5 mL
HI 93719C-0 Hardness EDTA solution 1 drop
HI 93719D-0 Hardness EGTA solution 1 drop
REAGENT SETS
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93746-01 Reagents for iron LR (100 packets)
HI 93746-03 Reagents for iron LR (300 packets)
HI 93719-01 Reagents for 100 hardness tests
HI 93719-03 Reagents for 300 hardness tests
For other accessories see page 48.
MEASUREMENT PROCEDURES
• Turn the meter on by pressing ON/OFF.
• When the LCD displays "- - - -" keep SET pressed until the desired
parameter is displayed.
SET
ON
OFF
• At this point, follow the chlorine procedure on page 36.
Note: Free and total chlorine have to be measured separately with
fresh unreacted samples following the above procedure if both
values are requested.
CYANURIC ACID MEASUREMENTS
• Press SET to select the cyanuric acid scale. “A” will appear on the
LCD.
SET
• At this point, follow the procedure on page 38.
• Release the key and when the LCD displays
"- - -", it is ready.
• Refer to the manual pages below to measure the appropriate
parameter and for the required reagents:
pH MEASUREMENT
• "PH" will appear on the LCD; then see
page 46.
LOW RANGE IRON MEASUREMENT
• "FE" will appear on the LCD; then see
page 44.
HARDNESS MEASUREMENT
• "Hrd" will appear on the LCD; then see
page 39.
HI 93744
Hardness/Iron LR/pH
22
31
C 104
pH/Cl/Cyanuric A.
HI 93711-0 Total Cl
DPD 1 packet
2
HI 93722-0 Cyanuric Acid Powder Reagent 1 packet
Liquid version (chlorine):
HI 93701A-F Free Chlorine DPD1 indicator 3 drops
HI 93701B-F Free Chlorine DPD1 buffer 3 drops
HI 93701A-T Total Chlorine DPD1 indicator 3 drops
HI 93701B-T Total Chlorine DPD1 buffer 3 drops
HI 93701C-T Total Chlorine DPD3 solution 1 drop
REAGENT SETS
HI 93701-01 Reagents for 100 free chlorine tests
HI 93701-03 Reagents for 300 free chlorine tests
HI 93701-F Reagents for 300 free chlorine tests (liquid version)
HI 93701-T Reagents for 300 total chlorine tests (liquid version)
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93711-01 Reagents for 100 total chlorine tests
HI 93711-03 Reagents for 300 total chlorine tests
HI 93722-01 Reagents for 100 cyanuric acid tests
HI 93722-03 Reagents for 300 cyanuric acid tests
For other accessories see page 48.
HI 93745HI 93745
HI 93745
HI 93745HI 93745
pH/Free & Total ChlorinepH/Free & Total Chlorine
pH/Free & Total Chlorine
pH/Free & Total ChlorinepH/Free & Total Chlorine
Total Hardness/Iron Low RangeTotal Hardness/Iron Low Range
Total Hardness/Iron Low Range
Total Hardness/Iron Low RangeTotal Hardness/Iron Low Range
The HI 93745 meter measures the pH, the Magnesium (Mg), Calcium
(Ca) and Total Hardness, the Free and Total Chlorine (Cl2) and Iron (Fe)
contents in water and wastewater.
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
• The meter will automatically default to pH measurement mode.
• When the LCD displays “- - -”, it is ready.
ON
OFF
pH
pH MEASUREMENTS
In order to perform pH measurements, follow the procedure on
page 46.
CHLORINE MEASUREMENTS
• Press SET once to select the chlorine scale. “C” will appear on the
LCD.
SET
C 104
pH/Cl/Cyanuric A.
30
SPECIFICATIONS
Range pH 5.9 to 8.5
Free Cl20.00 to 2.50 mg/L
Total Cl20.00 to 3.50 mg/L
Fe 0 to 400 µg/L
Mg Hardness 0.00 to 2.00 mg/L
Ca Hardness 0.00 to 2.70 mg/L
Total Hardness 0.00 to 4.70 mg/L
Resolution pH 0.1
Cl20.01 mg/L
Fe 1 µg/L
Hardness 0.01 mg/L
Accuracy pH ±0.1
Cl2±0.03 mg/L ±3% of reading
Fe ±10 µg/L ±8% of reading
Hardness ±0.11 mg/L ±5% of reading
Typical EMC pH ±0.1
Deviation Cl2±0.01 mg/L
Fe ±1 µg/L
Hardness ±0.02 mg/L
23
Chlorine/pH/Iron LR/Hardness
HI 93745
Light Source Light Emitting Diode @ 555 nm
Method For pH, Phenol red method. The reaction be-
tween pH and the reagent causes a red tint in
the sample.
For Chlorine, adaptation of the EPA recommended DPD method 330.5. The reaction
between chlorine and the reagent causes a pink
tint in the sample.
For Iron, Adaptation of the TPTZ Method. The
reaction between iron and the reagent causes a
blue tint in the sample.
For Hardness, adaptation of the Standard Meth-
ods for the Examination of Water and
Wastewater, 18th edition, Calmagite/colorimet-
ric method. The reaction between hardness and
reagents causes a maroon tint in the sample.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93701-0 Free Cl
HI 93711-0 Total Cl
DPD 1 packet
2
DPD 1 packet
2
HI 93746-0 Iron LR TPTZ Reagent 2 packets
HI 93719A-0 Hardness Ca & Mg indicator 0.5 mL
HI 93719B-0 Hardness Alkali solution 0.5 mL
HI 93719C-0 Hardness EDTA solution 1 drop
HI 93719D-0 Hardness EGTA solution 1 drop
Liquid version (chlorine):
HI 93701A-F Free Cl
HI 93701B-F Free Cl
HI 93701A-T Total Cl
HI 93701B-T Total Cl
HI 93701C-T Total Cl
2
2
2
2
2
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD3 solution 1 drop
REAGENT SETS
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93701-01 Reagents for 100 free chlorine tests
HI 93701-03 Reagents for 300 free chlorine tests
HI 93711-01 Reagents for 100 total chlorine tests
HI 93711-03 Reagents for 300 total chlorine tests
HI 93701-F Reagents for 300 free chlorine tests (liquid version)
HI 93745
Chlorine/pH/Iron LR/Hardness
24
C 104 - PH, CLC 104 - PH, CL
C 104 - PH, CL
C 104 - PH, CLC 104 - PH, CL
AND CYANURIC ACID AND CYANURIC ACID
AND CYANURIC ACID
AND CYANURIC ACID AND CYANURIC ACID
22
2
22
The C 104 meter measures pH, chlorine (Cl2, free and total) and
cyanuric acid content in water and wastewater.
SPECIFICATIONS
Range pH 5.9 to 8.5
Free Cl20.00 to 2.50 mg/L
Total Cl20.00 to 3.50 mg/L
Cyanuric Acid 0 to 80 mg/L
Resolution pH 0.1
Cl20.01 mg/L
Cyanuric Acid 1 mg/L
Accuracy pH ±0.1
Cl2±0.03 mg/L ±3% of reading
Cyanuric Acid ±1 mg/L ±15% of reading
Typical EMC pH ±0.1
Deviation Cl2±0.01 mg/L
Cyanuric Acid ±1 mg/L
Light Source Light Emitting Diode @ 555 nm
Method For chlorine, adaptation of the EPA recom-
mended DPD method 330.5. For pH, Phenol
red method. For cyanuric acid, adaptation of
the turbidimetric method.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93701-0 Free Cl
DPD 1 packet
2
29
C 104
pH/Cl/Cyanuric A.
MEASUREMENT PROCEDURES
• Turn the meter on by pressing ON/OFF.
ON
OFF
• When the LCD displays "C101" keep SET pressed until the desired
parameter is displayed.
SET
HI 93701-T Reagents for 300 total chlorine tests (liquid version)
HI 93719-01 Reagents for 100 hardness tests
HI 93719-03 Reagents for 300 hardness tests
HI 93746-01 Reagents for iron LR (100 packets)
HI 93746-03 Reagents for iron LR (300 packets)
For other accessories see page 48.
MEASUREMENT PROCEDURES
• Turn the meter on by pressing ON/OFF.
ON
OFF
• Release the key and when the LCD displays
"- - -", it is ready.
• Refer to the manual pages below to measure the appropriate
parameter and for the required reagents:
FREE CHLORINE MEASUREMENT
• "Cl F" will appear on the LCD; then see page 34.
TOTAL CHLORINE MEASUREMENT
• "Cl t" will appear on the LCD; then see page 36.
pH MEASUREMENT
• "PH" will appear on the LCD; then see page 46.
IODINE MEASUREMENT
• "Id" will appear on the LCD; then see page 42.
BROMINE MEASUREMENT
• "br" will appear on the LCD; then see page 32.
CYANURIC ACID MEASUREMENT
• "CYS" will appear on the LCD; then see page 38.
LOW RANGE IRON MEASUREMENT
• "FE" will appear on the LCD; then see page 44.
• When the LCD displays "- - - -" keep SET pressed until the desired
parameter is displayed.
• Release the key and when the LCD displays "- - -", it is ready.
SET
• Refer to the manual pages below to measure
the appropriate parameter and for the required reagents:
FREE CHLORINE MEASUREMENT
• "Cl F" will appear on the LCD; then see
page 34.
TOTAL CHLORINE MEASUREMENT
• "Cl t" will appear on the LCD; then see page 36.
pH MEASUREMENT
• "PH" will appear on the LCD; then see page 46.
LOW RANGE IRON MEASUREMENT
• "FE" will appear on the LCD; then see page 44.
HARDNESS MEASUREMENT
• "Hrd" will appear on the LCD; then see page 39.
C 101
pH/Cl/CYS/I/Br/Fe
28
25
Chlorine/pH/Iron LR/Hardness
HI 93745
C 101 - PH, CLC 101 - PH, CL
C 101 - PH, CL
C 101 - PH, CLC 101 - PH, CL
, CYS, I, BR, FE, CYS, I, BR, FE
, CYS, I, BR, FE
, CYS, I, BR, FE, CYS, I, BR, FE
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The C 101 meter measures free & total chlorine, cyanuric acid, pH,
iodine, bromine and low range iron in water and wastewater.
SPECIFICATIONS
Range pH 5.9 to 8.5
Free Cl20.00 to 2.50 mg/L
Total Cl20.00 to 3.50 mg/L
Cyanuric Acid 0 to 80 mg/L
Iodine 0.0 to 12.5 mg/L
Bromine 0.00 to 8.00 mg/L
Low Range Iron 0 to 400 µg/L (ppb)
Resolution pH 0.1
Free Cl20.01 mg/L
Total Cl20.01 mg/L
Cyanuric Acid 1 mg/L
Iodine 0.1 mg/L
Bromine 0.01 mg/L
Low Range Iron 1 µg/L
Accuracy pH ±0.1
Free Cl2±0.03 mg/L ±3% of reading
Total Cl2±0.03 mg/L ±3% of reading
Cyanuric Acid ±1 mg/L ±15% of reading
Iodine ±0.1 mg/L ±5% of reading
Bromine ±0.08 mg/L ±3% of reading
Low Range Iron ±10 µg/L ±8% of reading
Typical EMC pH ±0.1
Deviation Free Cl2±0.01 mg/L
Total Cl2±0.01 mg/L
Cyanuric Acid ±1 mg/L
C 101
pH/Cl/CYS/I/Br/Fe
26
Iodine ±0.1 mg/L
Bromine ±0.01 mg/L
Low Range Iron ±1 µg/L
Light Source Light Emitting Diode @ 555 nm
Method For Chlorine, Iodine and Bromine, adaptation of
the EPA recommended DPD method 330.5. For
pH, Phenol red method. For Cyanuric Acid,
adaptation of the turbidimetric method. For
Iron, adaptation of the TPTZ method.
REQUIRED REAGENTS
Code Unit Description Quantity
HI 93710-0 pH Phenol red 5 drops
HI 93701-0 Free Cl
DPD Reagent 1 packet
2
HI 93716-0 Bromine DPD Reagent 1 packet
HI 93718-0 Iodine DPD Reagent 1 packet
HI 93722-0 Cyanuric Acid Powder Reagent 1 packet
HI 93746-0 Iron LR TPTZ Reagent 2 packets
Liquid version (Chlorine):
HI 93701A-F Free Cl
HI 93701B-F Free Cl
HI 93701A-T Total Cl
HI 93701B-T Total Cl
HI 93701C-T Total Cl
2
2
2
2
2
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD1 indicator 3 drops
DPD1 buffer 3 drops
DPD3 solution 1 drop
REAGENT SET
HI 93701-01 Reagents for 100 free chlorine tests
HI 93701-03 Reagents for 300 free chlorine tests
HI 93701-F Reagents for 300 free Cl2 tests (liquid version)
HI 93701-T Reagents for 300 total Cl2 tests (liquid version)
HI 93710-01 Reagents for 100 pH tests
HI 93710-03 Reagents for 300 pH tests
HI 93711-01 Reagents for 100 total chlorine tests
HI 93711-03 Reagents for 300 total chlorine tests
HI 93716-01 Reagent for 100 bromine tests
HI 93716-03 Reagent for 300 bromine tests
HI 93718-01 Reagent for 100 iodine tests
HI 93718-03 Reagent for 300 iodine tests
HI 93722-01 Reagents for 100 cyanuric acid tests
HI 93722-03 Reagents for 300 cyanuric acid tests
HI 93746-01 Reagents for Iron LR (100 packets)
HI 93746-03 Reagents for Iron LR (300 packets)
For other accessories see page 48.
C 101
27
pH/Cl/CYS/I/Br/Fe
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