USP L## (Dalteparin Sodium, Dionex IonPac AS15) – A strong anion-exchange resin consisting of a highly cross-linked core of 5 – 9 µm macroporous particles having a 100 Angstroms average pore size and consisting of ethylvinylbenzene cross-linked with 55% divinylbenzene and an anion exchange layer grafted to the surface, which is functionalized with alkanol quartenary ammonium ions.