Hamilton polymeric, Poly(styrene divinylbenzene) cation exchange HPLC Columns are used in quality assurance as well as research and development laboratories because they last significantly longer than silica-based cation exchange columns. The five cation exchange column packings listed to the right can be used for the following separations: inorganic and organic cations; the herbicide glyphosate from its metabolite; mono and divalent cations in one run; oligosaccharides up to DP8; USP L17, L19 and L34 applications.