Chapter 5
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Orion AQUAfast Reagent Chemistry Instructions for Orion AquaMate
Thermo Scientific
Orion AquaMate Spectrophotometer User Manual
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77
AC2098 Cyanuric Acid Tablet Test
Melamine Method
0 – 160 mg/l CyA
1.
Load and run the AC2098 method.
2.
Fill a clean AQUAfast 24mm round vial, Cat. No. AC2V24, with 10 ml of sample. Close the
vial tightly with the cap. Wipe the exterior of the vial.
3.
Place the vial into the holder in the sample chamber and close the chamber door.
4.
Press the Measure Blank function key to measure the blank.
5.
Open the sample chamber door and remove the vial from the holder.
6.
Add one Cyanuric Acid Tablet straight from the foil into the vial. Crush the tablet with a
clean stir rod.
7.
Close the vial tightly with the cap and swirl or invert several times until the tablet is
dissolved (see notes below). Wipe the exterior of the vial.
8.
Place the vial into the holder in the sample chamber and close the chamber door.
9.
Press the Measure Sample function key to display the result in mg/l cyanuric acid.
Notes:
•
If cyanuric acid is present, a cloudy solution will occur. Small single particles are not
necessarily caused by cyanuric acid.
•
Dissolve the tablet completely (swirl the vial for approximately 1 minute). Undissolved
particles of the tablet can cause results that are too high.
•
Exceeding the measurement range: samples with concentration above 90 mg/l must be
diluted with water free of cyanuric acid. 10 ml of the diluted sample should be tested as
described above and the displayed results calculated using the dilution factor.