LaMotte SMART 2 - Manual (Page 149)

CYANURIC ACID–UDV
MELAMINE METHOD-TURBIDITY–UNIT DOSE VIALS
CODE 4313-H
QUANTITY CONTENTS CODE
1 Cyanuric Acid Unit Dose Vials, 10 pouches 4313-H
Equipment needed but not suppled:
STANDARD ACCESSORY PACKAGE
· CODE 1961
1 Package of 3 Vials (empty) 0156
1 Syringe, 3 mL, plastic 1184
1 Foil Storage Bag 9467
Or:
ADVANCED ACCESSORY PACKAGE
· CODE 1962
1 Pipettor, 3 mL 30528
1 Pipet Tip (0-5 mL) 30695
1 Cuvette Rack 31695
1 Package of 3 Vials (empty) 0156
1 Foil Storage Bag 9467
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 should be maintained between
25 and 75 ppm and various public health associations recommend that the
concentration should never exceed 100–150 ppm.
APPLICATION: Swimming pool water.
RANGE: 5–150 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. Check for stray light
interference (see p. 17).
Smart2 TEST PROCEDURES 2.04 Cyanuric Acid–UDV 1/2