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IONLITE C258F is a strong acid, gel type, high crosslinked polystyrene, sodium form, industry grade cation resin. Its characteristics are excellent physical, chemical and thermal stability, extremely high exchange capacity and high ion exchange kinetics.

IONLITE C258F is especially utilized in twin bed system only process for, municipal and industrial pure water treatment.

IONLITE C258F is usually use together with IONLITE A658F for twin bed deionized water system to produce pure water.