LaMotte 6906A-M DPD No. 4 Chlorine Test Tablets (1000 Count) - Instrument Grade for Pool & Spa Water Testing | Accurate Water Quality Analysis for Home & Commercial Use

DPD chlorine tablets employ DPD indicator (diethyl-p- phenylenediamine) to distinguish levels of free, combined, and total chlorine in a simple test sample. DPD chlorine tablets designated “Instrument Grade” are suitable for use with colorimeters and spectrophotometers. For more information on chlorination and measurement of chlorine, order The Chlorine Handbook (Thomas number 0535C36).

DPD No. 4 Tablet is used to measure total residual chlorine in water

Range of 0 to 10 ppm

Visual comparators only