We, ION Water Machineries one of the pioneer in the field of water treatment. we are water treatment plant manufacturer and supplier since 1967 in Kolkata, West Bengal. We are also mnfrs. of Water softening plant . Softener is packed with high Polystyrene base resin in sodium form. During service period polystyrene base resin in sodium form adsorb 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 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.