Felite™ FA225-OH is a type II gel strong base anion resin in hydroxide form. It has lower selectivities and therefore higher chemical efficiency and better resistance to fouling than type I anion resins. Their thermal sensitivity can result in reduced life when operating temperatures exceed 95°F.

Felite™ FA225-OH is intended for industrial demineralization applications where regeneration efficiency is important and operating temperatures are not excessive. It is especially well suited for use for systems where amine odors might be objectionable.