Instruction Manual
HI 83218
Multiparameter Bench
Photometer
for Laboratories
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 tech@hannainst.com.
TABLE OF CONTENTS
PRELIMINARY EXAMINATION .............................................................................................................................................. 3
GENERAL DESCRIPTION ......................................................................................................................................................3
ABBREVIATIONS ................................................................................................................................................................3
SPECIFICATIONS ............................................................................................................................................................... 4
PRECISION AND ACCURACY ................................................................................................................................................4
PRINCIPLE OF OPERATION ................................................................................................................................................. 4
FUNCTIONAL DESCRIPTION ................................................................................................................................................ 6
TIPS FOR AN ACCURATE MEASUREMENT ............................................................................................................................7
HEALTH & SAFETY ..........................................................................................................................................................10
METHOD REFERENCE TABLE ............................................................................................................................................. 10
OPERATIONAL GUIDE ....................................................................................................................................................... 11
SETUP ........................................................................................................................................................................... 13
HELP MODE ................................................................................................................................................................... 15
AMMONIA HR ................................................................................................................................................................ 16
AMMONIA MR ................................................................................................................................................................ 18
CHROMIUM VI HR .......................................................................................................................................................... 20
CHROMIUM VI LR ........................................................................................................................................................... 22
NITRATE ......................................................................................................................................................................... 24
NITRITE HR .................................................................................................................................................................... 26
NITRITE LR ..................................................................................................................................................................... 28
PHOSPHORUS ............................................................................................................................................................... 30
ERRORS AND WARNINGS ................................................................................................................................................. 32
DATA MANAGEMENT ........................................................................................................................................................ 33
STANDARD METHODS ...................................................................................................................................................... 33
ACCESSORIES ................................................................................................................................................................ 34
WARRANTY .................................................................................................................................................................... 35
HANNA LITERATURE ........................................................................................................................................................ 35
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:
• Two Sample Cuvettes and Caps
• Cloth for wiping cuvettes (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.
GENERAL DESCRIPTION
HI 83218 is a multiparameter bench photometer dedicated for Laboratory analysis. It measures 8 different
methods using specific liquid or powder reagents. The amount of reagent is precisely dosed to ensure
maximum reproducibility.
HI 83218 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 83218 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.
ABBREVIATIONS
°C: degree Celsius
EPA: US Environmental Protection Agency
°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
MR: medium range
LR: low range
PAN: 1-(2-pyridylazo)-2-naphtol
TPTZ: 2,4,6-tri-(2-pyridyl)-1,3,5-triazine
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, resolution, 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 accuracy 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 83218 is based on special subminiature tungsten lamps and narrow-band
interference filters to guarantee both high performance and reliable results.
Three 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.
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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
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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.
ESC
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.
RCL
HELP
SETUP
Press to recall the log.
Press to display the help screen.
Press to access the setup screen.
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: refere to Sample Preparation Chapter (page 17).
• 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.
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(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.
(c)(a) (b)
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)
• 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.
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USING CUVETTES
• Proper mixing of the cuvette is done by 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
• 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.
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• 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.
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 Ammonia HR 16
2 Ammonia MR 18
3 Chromium VI HR 20
4 Chromium VI LR 22
5 Nitrate 24
6 Nitrite HR 26
7 Nitrite LR 28
8 Phosphorus 30
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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 function
and then press the Chem Frm key to toggle between the available chemical forms for the selected method.
SPECIAL CONVERSIONS
For Magnesium and Calcium Hardness, special conversion factors can be used to convert the readings from
mg/L to French degrees (°f), German degrees (°dH) and English degrees (°E) of hardness. This can be
achieved by pressing or to access the second level functions and then press the Unit key to toggle
between °f, °dH, °E and mg/L.
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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 functional 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.
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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 Accept functional 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 is detected.
Press the functional key to enable/disable the beeper.
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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 83218 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.
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AMMONIA HIGH RANGE
SPECIFICATIONS
Range 0.0 to 50.0 mg/L
Resolution 0.1 mg/L
Accuracy ±0.5 mg/L ±5% 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
Nessler method. The reaction between ammonia and reagents causes a yellow tint in
the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93733A-0 Nessler Reagent 4 drops (in fresh and seawater)
HI 93733B-0 Ammonia Reagent 9 mL (in fresh and seawater)
REAGENT SETS
HI 93733-01 Reagents for 100 tests
HI 93733-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
Ammonia HR
Method Selection
method using the procedure described in the
section (see page 11).
ASTM Manual of Water and Environmental Technology, D1426-92
,
1 mL
• Fill a cuvette with 1 mL of unreacted sample, by means of the
syringe.
• Add 9 mL of HI 93733B-0 Ammonia Reagent, by means of the 3 mL
plastic pipette. Place the cap and swirl the solution to mix.
• 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.
Ammonia HR
16
9 mL
• Remove the cuvette.
• Add 4 drops of HI 93733A-0 Nessler Reagent. Replace
the cap and mix the solution.
• 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 30 seconds and press Read. When the timer ends the meter will perform the
reading. The instrument displays the results in mg/L of ammonium nitrogen (NH3-N).
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in mg/L of ammonia (NH3) and ammonium (NH
+
4
• Press or to return to the measurement screen.
INTERFERENCES
Interference may be caused by:
Acetone, alcohols, aldehydes, glycine, hardness above 1 g/L, iron, organic chloramines, sulfide, various
aliphatic and aromatic amines.
17
Ammonia HR
).
AMMONIA MEDIUM RANGE
SPECIFICATIONS
Range 0.00 to 10.00 mg/L
Resolution 0.01 mg/L
Accuracy ±0.05 mg/L ±5% of reading at 25 °C
Typical EMC ±0.01 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 420 nm
Method Adaptation of the
Nessler method. The reaction between ammonia and reagents causes a yellow tint in
the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93715A-0 First Reagent 4 drops (6 drops for seawater)
HI 93715B-0 Second Reagent 4 drops (10 drops for seawater)
REAGENT SETS
HI 93715-01 Reagents for 100 tests
HI 93715-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
Ammonia MR
method using the procedure described in the
ASTM Manual of Water and Environmental Technology, D1426-92
Method Selection
,
section (see page 11).
• 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.
• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for
measurement.
Ammonia MR
18
10 mL
• Remove the cuvette.
• Add 4 drops of HI 93715A-0 First Reagent (6 drops for
seawater analysis). Replace the cap and mix the solution.
• Add 4 drops of HI 93715B-0 Second Reagent (10 drops
for seawater analysis). Replace the cap and mix the solution.
• 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 30 seconds
and press Read. When the timer ends the meter will perform the
reading. The instrument displays the results in mg/L of ammonia nitrogen (NH3-N).
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in mg/L of ammonia (NH3) and ammonium (NH
+
4
• Press or to return to the measurement screen.
INTERFERENCES
Interference may be caused by:
Acetone, alcohols, aldehydes, glycine, hardness above 1 g/L, iron, organic chloramines, sulfide, various
aliphatic and aromatic amines.
19
Ammonia MR
).
CHROMIUM VI HIGH RANGE
SPECIFICATIONS
Range 0 to 1000 μg/L
Resolution 1 μg/L
Accuracy ±5 μg/L ±4% of reading at 25 °C
Typical EMC ±1 μg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the
Diphenylcarbohydrazide method. The reaction between chromium VI and the reagent
causes a purple tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93723-0 Powder reagent 1 packet
REAGENT SETS
HI 93723-01 Reagents for 100 tests
HI 93723-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
Chromium VI HR
page 11).
ASTM Manual of Water and Environmental Technology, D1687-92
method using the procedure described in the
Method Selection
,
section (see
• 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.
• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.
Chromium VI HR
20
10 mL
• Remove the cuvette and add the content of one packet of
HI 93723-0 reagent. Replace the cap and shake vigorously
for about 10 seconds.
• Reinsert the cuvette into the instrument.
• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 6 minutes and press Read. When the timer ends the meter will perform the reading. The
instrument displays concentration in
μμ
μg/L of chromium VI.
μμ
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in μg/L of Chromate (CrO
2
¯) and Dichromate (Cr2O
4
• Press or to return to the measurement screen.
INTERFERENCES
Interference may be caused by:
Vanadium above 1 ppm. However, waiting 10 minutes before reading, the interference is removed.
Iron above 1 ppm.
Mercurous and mercuric ions cause slight inhibition of the reaction.
21
Chromium VI HR
2
¯).
7
CHROMIUM VI LOW RANGE
SPECIFICATIONS
Range 0 to 300 μg/L
Resolution 1 μg/L
Accuracy ±1 μg/L ±4% of reading at 25 °C
Typical EMC ±1 μg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the
Diphenylcarbohydrazide method. The reaction between chromium VI and the reagent
causes a purple tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93749-0 Powder reagent 1 packet
REAGENT SETS
HI 93749-01 Reagents for 100 tests
HI 93749-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
page 11).
Chromium VI LR
ASTM Manual of Water and Environmental Technology, D1687-92
method using the procedure described in the
Method Selection
,
section (see
• 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.
• Press the Zero key. The meter will show “-0.0-” when the meter is zeroed and ready for measurement.
Chromium VI LR
22
10 mL
• Remove the cuvette and add the content of one packet of
HI 93749-0 reagent. Replace the cap and shake vigorously
for about 10 seconds.
• Reinsert the cuvette into the instrument.
• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 6 minutes and press Read. When the timer ends the meter will perform the reading. The instrument
displays concentration in
μμ
μg/L of chromium VI.
μμ
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in μg/L of Chromate (CrO
2
¯) and Dichromate (Cr2O
4
• Press or to return to the measurement screen.
INTERFERENCES
Interference may be caused by:
Vanadium above 1 ppm. However, waiting 10 minutes before reading, the interference is removed.
Iron above 1 ppm.
Mercurous and mercuric ions cause slight inhibition of the reaction.
23
Chromium VI LR
2
¯).
7
NITRATE
SPECIFICATIONS
Range 0.0 to 30.0 mg/L
Resolution 0.1 mg/L
Accuracy ±0.5 mg/L ±10% of reading at 25 °C
Typical EMC ±0.1 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 525 nm
Method Adaptation of the cadmium reduction method. The reaction between nitrate and the
reagent causes an amber tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93728-0 Powder reagent 1 packet
REAGENT SETS
HI 93728-01 Reagents for 100 tests
HI 93728-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
Nitrate
the
Method Selection
method using the procedure described in
section (see page 11).
• Using the pipette, fill the cuvette with 6 mL of sample, up
to half of its height, and replace the cap.
• 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 93728-0 reagent.
Nitrate
24
6 mL
• Replace the cap and immediately shake vigorously up
and down for exactly 10 seconds. Continue to mix by
inverting the cuvette gently for 50 seconds, while
taking care not to induce air bubbles. Powder will not
completely dissolve. Time and way of shaking could
sensitively affect the measurement.
• Reinsert the cuvette into the instrument, taking care
not to shake it.
• Press Timer and the display will show the countdown
prior to the measurement or, alternatively, wait for
4 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 nitrate-nitrogen.
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in mg/L of nitrate (NO3¯).
• Press or to return to the measurement screen.
INTERFERENCES
Interference may be caused by:
Ammonia and amines, as urea and primary aliphatic amines
Chloride above 100 ppm
Chlorine above 2 ppm
Copper
Iron(III)
Strong oxidizing and reducing substances
Sulfide must be absent
25
Nitrate
NITRITE HIGH RANGE
SPECIFICATIONS
Range 0 to 150 mg/L
Resolution 1 mg/L
Accuracy ±4 mg/L ±4% of reading at 25 °C
Typical EMC ±1 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 575 nm
Method Adaptation of the Ferrous Sulfate method. The reaction between nitrite and the
reagent causes a greenish-brown tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93708-0 Powder reagent 1 packet
REAGENT SETS
HI 93708-01 Reagents for 100 tests
HI 93708-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
page 11).
Nitrite HR
method using the procedure described in the
Method Selection
section (see
• Fill the cuvette up to the mark with 10 mL of unreacted
sample and replace the cap.
• 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.
Nitrite HR
26
10 mL
• Add the content of one packet of HI 93708-0 reagent.
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 10 minutes and press Read. When the timer ends the meter will perform the reading. The
instrument displays concentration in mg/L of nitrite.
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in mg/L of nitrogen-nitrite (NO2¯-N) and sodium nitrite
(NaNO2).
• Press or to return to the measurement screen.
27
Nitrite HR
NITRITE LOW RANGE
SPECIFICATIONS
Range 0.00 to 1.15 mg/L
Resolution 0.01 mg/L
Accuracy ±0.06 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
the reagent causes a pink tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93707-0 Powder reagent 1 packet
REAGENT SETS
HI 93707-01 Reagents for 100 tests
HI 93707-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
page 11).
Nitrite LR
method using the procedure described in the
EPA Diazotization method 354.1
. The reaction between nitrite and
Method Selection
section (see
• Fill the cuvette up to the mark with 10 mL of unreacted sample
(up to the mark) and replace the cap.
• 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.
Nitrite LR
28
10 mL
• Add the content of one packet of HI 93707-0 reagent.
Replace the cap and shake gently for about 15 seconds.
• Reinsert the cuvette into the instrument.
• Press Timer and the display will show the countdown prior to the measurement or, alternatively, wait
for 6 minutes and press Read. When the timer ends the meter will perform the reading. The instrument
displays concentration in mg/L of nitrite.
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in mg/L of nitrogen-nitrite (NO2¯-N) and sodium nitrite
(NaNO2).
• Press or to return to the measurement screen.
INTERFERENCES
Interference may be caused by the following ions:
ferrous, ferric, cupric, mercurous, silver, antimonious, bismuth, auric, lead, metavanadate and chloroplatinate.
Strongly reducing and oxidizing reagents.
High levels of nitrate (above 100 mg/L) could yield falsely high readings due to a minute amount of
reduction to nitrite that could occur at these levels.
29
Nitrite LR
PHOSPHORUS
SPECIFICATIONS
Range 0.0 to 15.0 mg/L
Resolution 0.1 mg/L
Accuracy ±0.3 mg/L ±4% of reading at 25 °C
Typical EMC Dev. ±0.2 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 93706A-0 Molybdate 10 drops
HI 93706B-0 Amino Acid Powder 1 packet
REAGENT SETS
HI 93706-01 Reagents for 100 tests
HI 93706-03 Reagents for 300 tests
For other accessories see page 34.
MEASUREMENT PROCEDURE
• Select the
the
• Fill the cuvette with 10 mL of unreacted sample (up to the mark)
and replace the cap.
Phosphorus
Method Selection
method using the procedure described in
section (see page 11).
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 937O6A-0 Molybdate reagent.
Phosphorus
30
• Add the content of one packet of HI 93706B-0
Phosphorus Reagent B (Amino Acid) 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 phosphorus (P).
• Press or to access the second level functions.
• Press the Chem Frm key to convert the result in mg/L of phosphate (PO
3
¯) and phosphorus pentoxide
4
(P2O5).
• Press or to return to the measurement screen.
INTERFERENCES
Interference may be caused by:
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
31
Phosphorus
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.
32
DATA MANAGEMENT
The analyzed data can be managed using Hanna’s product HI92000, Windows® Compatible Software.
STANDARD METHODS
Description Range Method
Ammonia HR 0.0 to 50.0 mg/L Nessler
Ammonia MR 0.00 to 10.00 mg/L Nessler
Chromium VI HR 0 to 1000 μg/L Diphenylcarbohydrazide
Chromium VI LR 0 to 300 μg/L Diphenylcarbohydrazide
Nitrate 0.0 to 30.0 mg/L Cadmium Reduction
Nitrite HR 0 to 150 mg/L Ferrous Sulfate
Nitrite LR 0.00 to 0.35 mg/L Diazotization
Phosphorus 0.0 to 15.0 mg/L Amino Acid
Windows® is registered Trademark of "Microsoft Co."
33
ACCESSORIES
REAGENT SETS
HI 93706-01 100 phosphorus tests
HI 93706-03 300 phosphorus tests
HI 93707-01 100 nitrite LR tests
HI 93707-03 300 nitrite LR tests
HI 93708-01 100 nitrite HR tests
HI 93708-03 300 nitrite HR tests
HI 93715-01 100 ammonia MR tests
HI 93715-03 300 ammonia MR tests
HI 93723-01 100 chromium VI HR tests
HI 93723-03 300 chromium VI HR tests
HI 93728-01 100 nitrate tests
HI 93728-03 300 nitrate tests
HI 93733-01 100 ammonia HR tests
HI 93733-03 300 ammonia HR tests
HI 93749-01 100 chromium VI LR tests
HI 93749-03 300 chromium VI LR 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 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)
34
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.
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.
35
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
Technical Support for Customers
Tel. (800) 426 6287
Fax (401) 765 7575
E-mail tech@hannainst.com
www.hannainst.com
Local Sales and Customer Service Office
Printed in EUROPE
(ROMANIA)
MAN83218 01/10
36
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