Total Chlorine reagent set for process Chlorine analyzer. Each set supplies enough reagent for 30 days of continuous operation. Reagent sets include: 473mL of free or total Chlorine indicator solution, 473mL of free or total Chlorine buffer solution, 24g of DPD indicator powder. These reagents have been specifically formulated to work with the Hach® CL17™ and other manufacturers online Chlorine analyzers. Lovibond® Tintometer® #: 540210.