The Milwaukee Mi414 is a photometer for measuring chloride. Chlorides are used by the water treatment professional to determine cycles of concentration in low pressure boilers and cooling systems. It is essential to monitor chloride concentrations in boiler systems to prevent metal parts from damage. In high levels, chloride can corrode stainless steel. Milwaukee offers MI414 microprocessor-based instrument with greater resolution, better accuracy and immediate results for measuring chloride (0.00 to 20.00 mg/L).