USP "L" Column Listings
See Hamilton's Qualifying USP "L" Columns Below
| USP | Packing Materials | Stationary Phase |
|---|---|---|
| L1 | Octadecyl silane chemically bonded to porous silica or ceramic micro-particles, 1.5 to 10 µm in diameter, or a monolithic silica rod | |
| L7 | Octylsilane chemically bonded to totally porous silica particles, 1.5 to 10 µm in diameter, or a monolithic silica rod | |
| L17 | Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 7 to 11 µm in diameter | |
| L19 | Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the calcium form, about 9 µm in diameter | |
| L21 | A rigid, spherical styrene-divinylbenzene copolymer, 3 to 10 µm in diameter | |
| L22 | A cation-exchange resin made of porous polystyrene gel with sulfonic acid groups, about 10 µm in size | |
| L23 | An anion-exchange resin made of porous polymethacrylate or polyacrylate gel with quaternary ammonium groups, about 10 µm in size | |
| L34 | Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the lead form, about 9 µm in diameter | |
| L47 | High capacity anion-exchange microporous substrate, fully functionalized with trimethylamine groups, 8 µm in diameter |