LC USP Methods

Method   
SGE Recommendations
L1 Octadecyl silane chemically bonded to porous silica or ceramic microparticles, 3 to 10µm in diameter.
L2 Octadecyl silane chemically bonded to silica gel of a controlled surface porosity that has been bonded to a spherical core, 30 to 50 µm in diameter.
L3 Porous silica microparticles, 5 to 10 µm in diameter.
L4 Silica gel of a controlled surface porosity bonded to a spherical core, 30 to 50 µm in diameter.
L5 Alumina of controlled surface porosity bonded to a solid spherical core, 30 to 50 µm in diameter
L6 Strong cation-exchange packing - sulfonated fluorocarbon polymer coated on a solid spherical core, 30 to 50 µm in diameter.
L7 Octyl silane chemically bonded to totally porous microsilica particles, 5 to 10 µm in diameter.
L8 An essentially monomolecular layer of aminopropylsilane chemically bonded to totally porous silica, 10 µm in diameter.
L9 10 µm irregular, totally porous silica gel having a chemically bonded, strongly acidic cation exchange coating.
L10 Nitrile groups chemically bonded to porous silica microparticles, 5 to 10 µm in diameter.
L11 Phenyl groups chemically bonded to porous silica particles, 5 to 10 µm in diameter.
L12 A strong anion-exchange packing - quaternary amine bonded on a solid spherical core, 30 to 50 µm in diameter.
L13 Trimethylsilane chemically bonded to porous silica microparticles, 5 to 10 µm in diameter.
L14 Silica gel, 10µm in diameter, having a chemically bonded, strongly basic quaternary ammonium anion-exchange coating.
L15 Hexyl silane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter.
L16 Dimethylsilane chemically bonded to porous silica particles, 5 to 10 µm in diameter.
L17 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 7 to 11 µm in diameter.
L18 Amino and cyano chemically bonded to porous silica particles, 5 to 10 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.
L20 Dihydroxypropane chemically bonded to porous silica particles, 5 to 10 µm in diameter.
L21 A rigid, spherical styrene-divinylbenzene copolymer, 5 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.
L24 A semi-rigid hydrophobic gel consisting of vinyl polymers with numerous hydroxyl groups on the matrix surface, 32 to 63 µm in diameter.
L25 Packing having the capacity to separate compounds with a molecular weight range from 100 to 5,000 daltons (as determined by polyethylene oxide), applied to neutral, anionic, and cationic water soluble polymers. A polymethacrylate resin base, cross-linked with polyhydroxylated ether (surface contained some residual carboxyl functional groups) was found suitable.
L26 Butyl silane chemically bonded to totally porous silica particles, 5 to 10 µm in diameter.
L27 Porous silica particles, 30 to 50 µm in diameter.
L28 A multifunctional support, which consists of a high purity, 100 angstrom, spherical silica substrate that has been bonded with anionic (amine) functionality in addition to a conventional C8 functionality.
L29 Gamma alumina, reverse phase, low carbon percentage by weight, alumina based polybutadiene spherical particles, 5 µm in diameter with a pore volume of 80 angstrom units.
L30 Ethyl silane chemically bonded to totally porous silica particles, 3 to 10 µm in diameter.
L31 A strong anion-exchange resin - quaternary amine bonded on latex particles attached to a core of 8.5 µm macroporous particles having a pore size of 2000 angstrom units and consisting of ethylvinylbenzene cross-linked with 55% divinylbenzene.
L32 A chiral ligand-exchange packing - L-proline copper complex covalently bonded to irregularly shaped silica particles, 5 to 10 µm in diameter.
L33 Packing having the capacity to separate proteins by molecular size over a range of 4,000 to 400,000 daltons. It is spherical, silica-based, and processed to provide pH stability.
L34 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the lead form, about 9 µm in diameter.