LaMotte DC1600 Colorimeter - Manual (Page 37)

CYANURIC ACID
MELAMINE - TURBIDITY CODE 3661
QUANTITY CONTENTS CODE
2 x 250 mL *Cyanuric Acid Test Solution *4856-K
1 Syringe, 5 mL 0807
*WARNING: Reagents marked with a * are considered hazardous substances. Material Safety Data Sheets (MSDS) are supplied for
these reagents. For your safety, read label and accompanying MSDS before using.
Cyanuric acid is added to swimming pool water as a stabilizing agent for free chlorine residuals. It minimizes the loss of
chlorine from the action of ultraviolet rays in sunlight. Cyanuric acid levels in pools should be maintained between 25 and
50 ppm and should never exceed the 100-150 ppm limit as proposed by the various public health associations.
APPLICATION: Swimming pool waters.
RANGE: 5 – 200 ppm Cyanuric Acid
METHOD: A buffered solution of melamine forms a precipitate with cyanuric acid in proportion to the
amount of cyanuric acid present. The amount of particles in suspension is measured
turbidimetrically.
SAMPLE HANDLING
& PRESERVATION: Cyanuric acid samples should be analyzed as soon as possible after collection. Deterioration of
the sample can be minimized by keeping samples in the dark or refrigerated until analysis can
be performed.
INTERFERENCES: No known interference from compounds normally found in pool water. Temperature of the
sample should be maintained between 70°F and 80°F for best results.
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