Product series/PRODUCTS
Residual Chlorine: At a pH of 6.2 to 6.5, free chlorine directly reacts with N,N-diethyl-1,4-phenylenediamine (DPD) to form a red compound. The absorbance of this compound is measured at 515 nm. Product Introduction - Total Chlorine: Under the same pH of 6.2 to 6.5 conditions, an excess of potassium iodide, elemental chlorine, hypochlorous acid, hypochlorite, and chloramine reacts with DPD to produce a red compound. The absorbance of this compound at 515 nm is measured, and the absorbance value, A, is used to calculate the content of residual and total chlorine.
● Online monitoring of surface water
● Online monitoring of chloride levels in drinking water.
● Online monitoring of chloride levels in wastewater discharge from pollution sources.
● Monitoring of the chlorination disinfection process in industrial cooling water and other applications
