Hanna Instruments HI 83206-2008 - Manual (Page 19)

36 37 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 73.
MEASUREMENT PROCEDURE
• Select the Cyanuric Acid method using the procedure described 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
Copper LR
• Remove the cuvette.
• Add the content of one packet of HI 93747-0 Bicinchoninate.
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 45 seconds and press
READ. When the timer ends the meter will perform the reading.
• The instrument displays the results in mg/L of copper.
INTERFERENCES
Interference may be caused by:
Silver
Cyanide
For samples overcoming buffering capacity of reagent (around pH 6.8), pH should be adjusted between 6
and 8.