Hamilton Company | HPLC Columns & Accessories

USP Classification

USP	Specification	Hamilton Columns

L1	Octadecyl silane chemically bonded to porous silica or ceramic micro-particles, 1.5 to 10 µm in diameter, or a monolithic silica rod	See Qualifying Columns

L7	Octylsilane chemically bonded to totally porous silica particles, 1.5 to 10 µm in diameter, or a monolithic silica rod	See Qualifying Columns

L17	Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 7 to 11 µm in diameter	See Qualifying Columns

L19	Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the calcium form, about 9 µm in diameter	See Qualifying Columns

L21	A rigid, spherical styrene-divinylbenzene copolymer, 3 to 10 µm in diameter	See Qualifying Columns

L22	A cation-exchange resin made of porous polystyrene gel with sulfonic acid groups, about 10 µm in size	See Qualifying Columns

L23	An anion-exchange resin made of porous polymethacrylate or polyacrylate gel with quaternary ammonium groups, about 10 µm in size	See Qualifying Columns

L34	Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the lead form, about 9 µm in diameter	See Qualifying Columns

L47	High capacity anion-exchange microporous substrate, fully functionalized with trimethylamine groups, 8 µm in diameter	See Qualifying Columns