Kits are used to monitor residual disinfectant levels for chlorine in drinking water maximum residual disinfectant level 4 mg/L.. Chlorine is a biocide used to treat potable water, municipal wastes.
The determination of Chemical Oxygen Demand COD is widely-used in municipal and industrial labratories to measure the overall level of organic contaminiation in wastewater.USEPA-accepted and mercury-free methods available.