강력한 basic quaternary 암모늄 음이온 교환기, exchange capacity 0.25 meq/g, pKa ~ 18, base material polystyrene-divinylbenzene copolymer, pH stability 1–14
구형 입자, size 45 μm and 85 μm (standard), pore size 65–75 Å, very large specific surface 800 m2/g, pore volume 1.4 cm3/g, RP capacity 300 mg/g (caffeine in water)
