Felite™ FA201 is a highly efficient and durable, Type I macroporous strong base anion exchange resin with quaternary ammonium as the functional group. Its macroporous structure provides high operating capacity and excellent regeneration efficiency and allows complete removal of all anions, including weakly dissociated ions such as silica. 

Felite™ FA201 resin can be used as an organic scavenger placed in front of a deionization system. Working in the chloride form, it removes the natural organic substances from the raw water, protecting subsequent anion exchange resins from possible irreversible organic fouling. Felite™ FA201 is especially well suited for high flow rate and high-temperature polishing applications.