USP L61 A hydroxide-selective, strong anionexchange resin consisting of a highly cross-linked core of 13 µm microporous particles having a pore size less than 10 Ǻ units and consisting of ethylvinylbenzene cross-linked with 55% divinylbenzene with a latex coating composed of 85 nm diameter microbeads bonded with alkanol quarternary ammonium ions (6%).