ResinTech CG8-K is an amber-colored 8% cross-linked gel strong acid cation resin in the potassium form. It has a capacity and other characteristics similar to other products in the CG8 family. CG8-K can be used interchangeably with sodium form CG8. It is intended for use in water softening and other neutral salt cation exchange applications where the release of sodium ions is undesirable.