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Factor & Method: DPD-FAS Titration Chlorine: Low concentrations of free, total, and various forms of combined chlorine are determined colorimetrically using DPD tablets or liquids, or by ferrous ammonium
sulfate/DPD titration. Higher concentrations are best determined using iodometric titration, which indicates total chlorine only
Test system: DPD Liquid colorimeter
Range/Sensitivity: 0 to 10 ppm/0.2 ppm, 50 at 10 ppm
# of Tests (# of reagent): (4)
Image for illustration only.
