0.2 Cubic Feet or 5.7 Liters of high capacity softener resin. If your softener is more than five years old or there is a lot of iron in your water then you might need to replace your filter media known as Ion-Exchange Resin.
We are providing new resin supplied in the very stable sodium form.

Polymer Structure Styrene				Crosslinked with DVB
Functional Group				R-(SO3)–M+
Ionic Form,				as shipped Sodium
Physical Form Tough,				Spherical Beads
Screen Size Distribution				16 to 50
					+16 mesh (U.S. Std) < 5 %
					-50 mesh (U.S. Std) < 1 %
pH Range				0 – 14
Sphericity				> 93 percent
Uniformity Coefficient				Approx. 1.6
Water Retention				Sodium Form 52 lbs/cu.ft.
Solubility				Sodium Form 42 to 49 percent
Approximate Shipping Weight				Insoluble
Swelling Ca+2 or Na+ to H+				52 lbs/cu.ft.
Total Capacity				5 to 9 percent
				Sodium Form 1.9 meq/ml min
				Hydrogen Form 1.8 meq/ml min