We ION WATER MACHINERIES pioneer in the field of water treatment plants and filters manufacturing in kolkata since 1967. Formerly known as IONOCHEM A UNIT OF SCIENTIST J.L.BOSE. We are specialist on manufacturing of water softening plants domestic and industrial segments. Water softener is packed with high polystyrene base cation exchanger, during the service period high polystyrene base cation exchanger in sodium form adsorb Calcium, Magnesium in raw water. These then require regeneration with 5 to 10% common salt solution. In case raw water contains iron more than 0.3ppm as Fe, an iron removal filter must be installed before a softener. This is to avoid iron fouling of cation exchanger in softener.