DPD is an indicator that is used to measure either Free Chlorine or Total Chlorine with the CL17 Analyzer. Depending upon whether Free Chlorine or Total Chlorine is being measured, the DPD indicator is added to Free Chlorine (2314011) or Total Chlorine (2263411) Indicator Solution, and used with Free (231411) or Total (2263511) Buffer Solution by the CL17 Analyzer. *This product has not been evaluated to test for chlorine and chloramines in medical applications in the United States.
