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USP Listing

USP Column Classification Table

USP Column classification Recommended Column Manufacturer
L1Octadecyl silane bonded to porous silica or ceramic microparticles, 3 to 10 µm in diameter.Acosil C18Acosil
L2Octadecyl silane chemically bonded to silica gel of controlled surface porosity bonded to a solid spherical core, 30 to 50 µm in diameter.Acosil C18Acosil
L3Porous silica microparticles, 5 to 10 µm in diameter.Acosil SilicaAcosil
L6Strong cation-exchange packing: sulfonated fluorocarbon polymer coated on a solid spherical core, 30 to 50 µm in diameter.Acosil SCXAcosil
L7Octylsilane bonded to totally porous microsilica particles, 3 to 10 µm in diameter.Acosil C8Acosil
L8Aminopropyl-silane chemically bonded to totally porous silica gel support, about 10 µm in diameter.Acosil NH2Acosil
L9Irregular totally porous silica gel having a chemically bonded, strongly acidic cation-exchange coating, about 10 µm.Acosil 100 SCXAcosil
L10Nitrile groups chemically bonded to porous silica microparticles, 3 to 10 µm in diameter.Acosil CNAcosil
L11Phenyl groups chemically bonded to porous silica microparticles, 3 to 10 µm in diameter.Acosil PhenylAcosil
L12Strong anion-exchange packing with quaternary amine bonded to solid silica spherical core, 30 to 50 µm in diameter.Acosil SAXAcosil
L13Trimethylsilane chemically bonded to porous silica microparticles, 3 to 10 µm in diameter.Acosil TMSAcosil
L14Silica gel with a chemically bonded, strongly basic quaternary ammonium anion-exchange coating, about 10 µm.Acosil 100 SAXAcosil
L15Hexylsilane chemically bonded to porous silica particles, 3 to 10 µm in diameter.Acosil 100 C6Acosil
L16Dimethylsilane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter.Acosil C2Acosil
L17Strong cation-exchange resin of sulfonated cross-linked styrene-divinylbenzene copolymer, hydrogen form, 7 to 11 µm.Acosil H+Acosil
L18Amino and cyano groups chemically bonded to porous silica particles, 5 to 10 µm in diameter.Acosil CN/NH2Acosil
L19Strong cation-exchange resin of sulfonated cross-linked styrene-divinylbenzene copolymer, calcium form, about 9 µm.Acosil Ca++Acosil
L20Dihydroxypropane groups chemically bonded to porous silica particles, 3 to 10 µm in diameter.Acosil Diol 100Acosil
L22Cation-exchange resin of porous polystyrene gel with sulfonic acid groups, about 10 µm.Acosil Polar PacAcosil
L26Butylsilane chemically bonded to totally porous silica particles, 5 to 10 µm in diameter.Acosil C4Acosil
L33Packing for separation of proteins (4,000–400,000 Da); spherical silica-based with enhanced pH stability.Acosil SECAcosil
L34Strong cation-exchange resin of sulfonated cross-linked styrene-divinylbenzene copolymer, lead form, about 9 µm.Acosil Pb++Acosil
L35Zirconium-stabilized spherical silica packing with hydrophilic diol-type bonded phase, 150 Å pore size.Acosil SECAcosil
L40Cellulose tris(3,5-dimethylphenylcarbamate) coated porous silica particles, 5 to 20 µm.Acosil CellAcosil
L43Pentafluorophenyl groups chemically bonded to silica particles, 5 to 10 µm in diameter.Acosil PFPAcosil
L51Amylose tris(3,5-dimethylphenylcarbamate) coated porous spherical silica, 5 to 10 µm.Acosil PackAcosil
L58Strong cation-exchange sulphonated styrene-divinylbenzene copolymer, sodium form, 7–11 µm.Acosil HPAcosil
L62Suitable for polar compounds (sugars, nucleotides) and fat-soluble compounds (tocopherols, carotenoids).Acosil C30Acosil