|Taylor DPD Reagent #1 remove
DPD is the common abbreviation for N, N-diethyl-p-phenylenediamine. Taylor DPD Reagent #1 is the first reagent in a series of three used to determine both total chlorine and free chlorine levels. It can also detect total bromine level. Preferable method for testing pool and spa water; usually mandated for use at public facilities by health authorities. Turns the sample water pink.