We, ION WATER MACHINERIES situated at 10, Kiran Sankar Roy Road, Kolkata-700001 one of the Pioneers in water treatment manufacturing various type of water treatment machineries such as Iron Removing Plant, Water Softening Plant D.M. Plant etc. Softener is packed with high Polystyrene base resins in sodium form. During service period polystyrene base resins in sodium form absorb Calcium, Magnesium in raw water and after producing certain amount of soft water these are exhausted, These then require regeneration with 5% to 10% Common salt solution In case of big unit, saturated salt solution is prepared in R.C.C. tank and required amount of brine is drawn in a brine measure tank. The brine soln. is then diluted with the help of an injector and fed into the Softener. Soft water then tested with the help of a hardness test kit and fed into different processes. In case raw water contains iron more than o.3 ppm as Fe an Iron Removal Plant must be installed before a Softener. This is to avoid iron fouling of Ion Exchange in softener.