Impex Produkter

Impex Produkter Viscolor Powder Pillows Free Chlorine Manual Measuring range: 0.03­6.00 mg/L Cl2 Method: At a pH value of 6.2 to 6.5 in a phosphate buffered system, free chlorine reacts with N,N-diethyl-1,4-phenylene diamine (DPD) and forms a red-violet dye. In order to obtain accurate results the sample must be analyzed immediately after collection and cannot … Read more