The C100EFM is a fine mesh water softening resin that is high capacity, conventional gel polystyrene strong acid cation exchange resin designed for use in residential or industrial water softening equipment.

Cation resin in sodium form removes hardness ions such as calcium and magnesium by replacing them with sodium. When the resin bed is exhausted, the hardness ions begin to pass through the bed.
Note: Item packaging may look different than pictured.