Ion Exchange Resin IonPlus CA-10 Pure Elements offers a full line of Ion Exchange Resins (cation, anion, mixed bed & selectives) with applicability in household & industrial softening, boiler feedwater, food & beverage, electronics, and wastewater treatment. Standard cross-linked styrene divinylbenzene strong acid cation resin in bed form. Specially developed to eliminate taste and odor as well as providing excellent stability. It is primarily used for softening water in municipal and industrial water treatment.