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Cyanuric Acid
CYANURIC ACID
SPECIFICATIONS
Range
0 to 80 mg/L
Resolution
1 mg/L
Accuracy
±1 mg/L ±15% of reading
Typical EMC
±1 mg/L
Deviation
Light Source
Tungsten lamp with narrow band interference filter @ 525 nm
Method
Adaptation of the turbidimetric method. The reaction between cyanuric acid and the
reagent causes a white suspension in the sample.
REQUIRED REAGENTS
Code
Description
Quantity
HI 93722-0
Powder reagent
1 packet
REAGENT SETS
HI 93722-01
Reagents for 100 tests
HI 93722-03
Reagents for 300 tests
For other accessories see page 128.
MEASUREMENT PROCEDURE
• Select the
Cyanuric Acid method using the procedure de-
scribed in the
Method Selection section (see page 12).
• 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 ZERO key. The meter will show “-0.0-” when the
meter is zeroed and ready for measurement.
• Fill a graduated beaker up to the 25 mL mark with the
sample, add the content of one packet of HI 93722-0 reagent
and swirl gently to mix.
10 mL
Cyanide
INTERFERENCES
Interference may be caused by large amounts of turbidity that will cause high readings.
Oxidizing (such as chlorine) or reducing agents (such as sulfide or sulfur dioxide) are known to interfere with
the measurement. Distillation will remove these.
Samples with high pH values should be adjusted to approximately pH 7 before testing.
CAUTION:
cyanides, their solutions, and hydrogen cyanide liberated by acids, are very poisonous.
• Press the
or
to access the second level of functions.
• Press the
Chem Frm
functional key to convert the result in mg/L of Potassium Cyanide (KCN).
• Press the
or
to go back to the measurement screen.
Note
:
for most accurate results perform the test at 20-25 °C.