ON
OFF
ZERO
MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
• When the LCD displays "- - -", it is
ready.
Note:
Temperature is a very important parameter for this
test method. For best results the sample should have
a temperature not exceeding 20°C.
• Fill a cuvet up to 1.5 cm
(¾") below the rim 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.
• 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
1 level spoon of HI 93714A
Cyanide Reagent. Remember
to close the reagent bottle
immediately after use.
Note:
Pay attention to the way
the spoon is filled:
- do not overfill it;
- do not press the powder.
• Replace the cap immediately, to
prevent the escape of chlorine
gas which is developed during
the reaction, and shake gently
for 30 seconds.
• Wait for 30 seconds and add
the content of one packet of HI
93714B-0 reagent. Replace the
cap and shake gently for 10
seconds.
• Immediately add the content of
one packet of HI 93714C-0
reagent, replace the cap and
shake vigorously for 20 seconds.
• Reinsert the cuvet into the
instrument.
• Press READ TIMED and the display will show the
countdown prior to the measurement or, alternatively,
wait for 25 minutes and press READ DIRECT. In both
cases "SIP" will appear during measurement.
Note:
Shake the cuvet 4 or 5 times vigorously during the
first 20 minutes of the timed reading. Accuracy is not
affected by undissolved reagent powder.
• The instrument directly displays concentration in mg/L of
cyanide on the Liquid Crystal Display.
To convert the result in ppm of Potassium Cyanide (KCN)
multiply it by 2.5.
READ
TIMED
12
3
6
9
25’
READ
DIRECT
The instruction listed below should be carefully followed
during testing to ensure best accuracy.
• Do not touch the cuvet walls with hands.
• 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.
• Do not let the test sample stand too long after reagent
is added or accuracy will be affected.
• 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.
• 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 measure-
ments, 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).
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.
9V
SLIDE
OFF
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.
REAGENT SETS
HI 93714-01
Reagents for 100 tests
HI 93714-03
Reagents for 300 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
Caps for cuvets (4 pcs)
HI 93703-50
Cuvets cleaning solution (230 mL).
INTERFERENCES
Interference may be caused by large amounts of turbidity that
will cause high readings.
Oxidizing (like chlorine) or reducing agents (such as sulfide
or sulfur dioxide) are known to interfere with the measure-
ment. Distillation will remove these.
Samples with high pH values should be adjusted to ap-
proximately pH 7 before testing.
CAUTION:
Cyanide, its solutions and hydrogen cyanide
liberated by acids are very poisonous.
12
3
6
9
30"
Operational Guide
Tips for an Accurate Measurement
Accessories
CE Declaration of Conformity
Battery Replacement
10 mL
12
3
6
9
10"