AmberLite IRC120 Na Ion Exchange Resin is a Gaussian, Gel, Strong Acid Cation Exchange Resin for Industrial Softening Applications. It is a general-purpose softening resin with a long-established track record of reliable performance in the industry. This durable resin offers a good balance of capacity and strength resulting in long lifetime for co-flow regenerated systems in industrial water treatment. AmberLite�IRC120 Na is available for demineralization applications when the sodium-form is preferred by the user.