•Fill both cuvettes with 10 mL of unreacted
sample. Replace the cap on one of the cuvettes,
this is the zero.
•To the second cuvette add one packet of
HI 770A-25 reagent. Replace the cap and
shake gently until the reagent is completely
dissolved.
•Unscrew the cap and add one packet of
HI 770B-25 reagent. Replace the cap and shake
vigorously until the reagent is completely
dissolved. Wait 10 minutes.
•Unscrew the cap and add one packet of
HI 770C-25 reagent. Replace the cap and
shake gently until the reagent is completely
dissolved. Wait 2 minutes.
•During the two minute reaction time. 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.
•Place the first cuvette (unreacted) 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.
•After the two minute reaction time, place the
second cuvette (reacted) into the meter and
close the meter’s cap. Press the button.
•The instrument directly displays the
concentration in ppm of silica on the LCD. To
convert the reading to ppm silicon (Si) multiply
the reading by 0.467. The meter automatically
turns off after 10 minutes.
10 mL •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.
REAGENT SETS
HI 770-25 Reagent set for 25 Silica High Range tests
OTHER ACCESSORIES
HI 770-11 Silica HR 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 this product, make sure that it is entirely suitable for your specific application and for the
environment in which it is used.
Operation of this instrument may cause unacceptable interferences to other electronic equipment, 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 damage 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.
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:
www.hannainst.com
Hanna Instruments reserves the right to modify the design, construction or
appearance of its products without advance notice.
Battery management
To save the battery, the instrument shuts down after 10 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.
IST770 04/13
Measurement procedure: Accessories:Tips for an accurate measurement
10 mL
