Capital controls india private limited manufactures water quality monitoring equipments which is used monitoring water, wastewater, cooling water; boiler feed water, r.O., utilities, food and beverage, industrial process control and industrial effluent. Being a part of that capital controls` series 1870e chlorine residual analyzer technology has been independently tested and proven to be a reliable analyzer for continuous, accurate residual analysis. Salient features of series 1870e residual analyzer are as follows: