WE, ION WATER WATER MACHINERIES, one of the pioneers in water treatment industries manufacturing various equipment relating to water treatment situated at 10, Kiran Sankar Roy Road, Kolkat700001. Softener is packed with high polystyrene base resin in sodium base. 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 units, saturated salt solution is prepared in a R.C.C. tank and required amount of brine is drawn in a brine measuring tank. The brine soln. is then diluted with the help of an injector and fed into the Softener. Soft water is then tested with the help of a Hardness test Kit and fed into different processes. In case raw water contains iron more then 0.3 ppm as Fe. an Iron Removal Filter must be installed before a softener. This to avoid iron fouling of Ion Exchange Resin in softener.