LaMotte 1200 Colorimeter - Manual (Page 64)

OZONE TEST METHOD SPECIFICATIONS
APPLICATION
Drinking, pool, and aquatic waters.
RANGE
0.0 - 0.5 ppm Ozone
METHOD
Ozone rapidly and stoichiometrically decolorizes Indigo Trisulfonate under acidic
conditions.
HANDLING & PRESERVATION
Ozone is extremely unstable in aqueous solutions. Test must be performed
immediately and the sample must not be agitated.
INTERFERENCES
Manganese at any level will interfere.
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