We offer purolite resin. Purolite c100 is a premium industrial grade, gel polystyrenic strong acid cation exchange resin, supplied in the sodium form. Its principal application in the sodium form is in industrial water softening. Due to its robust nature purolite c100 is also used as a cation exchanger in demineralization plants, where it is operated in the hydrogen form following full acid regeneration. This document refers specifically to the resin use in water softening, for the removal of total hardness, with sodium chloride (salt) regeneration. For its use as cation exchange resin in demineralization processes, please refer to the purolite c100 hydrogen cycle engineering bulletins. Purolite c100 has a standard particle size distribution and it is primarily used in co-flow and traditional counter-flow regenerated softening units. It operates successfully over a wide range of operating conditions and it offers a higher resistance to the attack by oxidizing agents, such as chlorine, compared to some other less robust softening resins, resulting in a longer resin life.