... water treatment, softening, salt removal, hard removalOur Ion Exchange resin can be safely used in water pitchers, water filter cartridge Ion ... Exchange Resin Model No.: TC007FGComparison to Purolite C100E, Rohm & Haas: SR1LFood ... certificate----meet FDA 21 CFR 173.25, Ion exchange resin may be safely used for treatment of food and drinking ...