16219 | DPD No. 4 (250 units) for Pooltester, Checkit and Pool Check

DPD reagents are a colourimetric method based on N-diethyl-phenylenediamine, which react when coming into contact with water. They turn magenta in proportion to the concentration of chlorine in the water. DPD reagent tablets are white with a crystalline appearance.
Ideal for: Used exclusively for Pooltester, Checkits and PoolCheck.
Added value: Tablets are the most accurate, easy-to-use reagent dosing system.