Cyanuric acid – LaMotte DC1600 Colorimeter User Manual

Page 37

CYANURIC ACID

MELAMINE - TURBIDITY

CODE 3661

QUANTITY

CONTENTS

CODE

2 x 250 mL

*Cyanuric Acid Test Solution

*4856-K

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.