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Measurement procedure:
• Turn the meter on by pressing the button.
All segments will be displayed. When the
display shows "Add", "C.1" with "Press"
blinking, the meter is ready.
• Fill the cuvette with 10 mL of unreacted
10 mL
sample and replace the cap. Place the cuvette
into the meter and close the meter's cap.
• Press the button. When the display shows
"Add", "C.2" with "Press" blinking the
meter is zeroed.
• Remove the cuvette from the meter and
unscrew the cap. Add the content of one
packet of HI 711-25 reagent. Replace the
cap and shake gently for 20 seconds. Place
the cuvette back into the meter.
• Press and hold the button until the timer is
displayed on the LCD (the display will show
the countdown prior to the measurement)
or, alternatively, wait for 2 minutes and
30 seconds and press the button.
• The instrument directly displays the
concentration of total chlorine in ppm. The
meter automatically turns off after 2 minutes.
Tips for an accurate measurement
• It is important that the sample does not contain any debris.
• Whenever the cuvette is placed into the measurement cell, it must be dry
outside, and completely free of fingerprints, oil and dirt. Wipe it thoroughly with
HI 731318 or a lint-free cloth prior to insertion.
• Shaking the cuvette can generate bubbles, causing higher readings. To obtain
accurate measurements, remove bubbles by swirling or by gently tapping the
cuvette.
• Do not let the reacted sample stand for too long after reagent is added, as
accuracy will be affected.
• After the reading it is important to immediately discard the sample, otherwise
the glass might become permanently stained.
Battery management
To save the battery, the instrument shuts down after 2 minutes of non-use.
One fresh battery lasts for a minimum of 5000 measurements. When the battery is dead the
instrument will display "bAd" then "bAt" for 1 second and then turns off.
To restart the instrument, the battery must be replaced with a new one.
To replace the instrument's battery:
• Turn the instrument off by holding the button until the meter shuts off.
• Turn the instrument upside down and remove the battery cover with a screwdriver.
• Remove the battery from its location and replace it with a new one, inserting the
negative end first.
• Insert the battery cover and replace the screw with a screwdriver.
Accessories:
REAGENT SETS
HI 711-25
Reagents for 25 Total Chlorine tests
OTHER ACCESSORIES
HI 711-11
Total Chlorine Certified Standard Kit
HI 731318
Cloth for wiping cuvettes (4 pcs.)
HI 731321
Glass cuvettes (4 pcs.)
HI 731225
Cuvette black cap for checker HC (4 pcs.)
HI 731353
Cuvette seal cap for checker HC (4 pcs.)
HI 740028
1.5V AAA batteries (4 pcs.)
HI 93703-50
Cuvette cleaning solution (230 mL)
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, thus
requiring the operator to take all necessary steps to correct interferences.
Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC
performance.
To avoid damages or burns, do not put the instrument in microwave oven. For the safety of you and the
instrument do not use or store the instrument in hazardous environments.
Hanna Instruments reserves the right to modify the design, construction or
appearance of its products without advance notice.
For additional information, contact your
dealer or the nearest
Hanna Customer Service Center.
To find a Hanna Office in your area,
visit our web site:
w w w . h a n n a i n s t . c o m
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