The chemical method residual chlorine online water quality analyzer uses the national standard method HJ 586: ‘Determination of Free and Total Chlorine in Water Quality — N,N-Diethyl-1,4-Phenylenediamine Spectrophotometric Method.’ It is capable of measuring residual and total chlorine during chlorination disinfection processes in drinking water, wastewater, and industrial circulating cooling water.
A pH buffer reagent is added to the water sample to adjust the pH to approximately 6.2–6.5. Free chlorine reacts directly with N,N-diethyl-1,4-phenylenediamine (DPD reagent) to form a red-colored compound. The absorbance of this compound is then measured at a wavelength of 510 nm to determine the free chlorine concentration.
Sind Sie bereit, Ihre Abläufe mit branchenführenden Online-Analyselösungen zu verbessern? Setzen Sie sich mit uns in Verbindung, um fachkundige Beratung, Preise oder eine persönliche Demo zu erhalten.
Juana Zhong
Marketingleiter
Juana
Hey, wie kann ich Ihnen heute helfen?