Follow the list of USP L code phase from 1 to 50, these phase make the guideline from USP which have many column manufacture follow these guide to provide their column on pharma testing market.
L1 Octadecyl silane 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 solid spherical core, 30 to 50µm in diameter
L3 Porous silica microparticles, 5µm to 10µm in diameter
L4 Silica gel of controlled surface porosity bonded to a solid spherical core, 30 to 50µm in diameter.
L5 Alumina of controlled surface porosity bonded to a solid spherical core, 30 to 50µm in diameter.
L6 Strong cation-exchange packing: sulfonated fluorocarbon polymer coated on a solid spherical core, 30 to 50µm in diameter.
L7 Octylsilane bonded to totally porous microsilica particles, 3 to 10µm in diameter.
L8 An essentially monomolecular layer of aminopropyl-silane chemically bonded to totally porous silica gel support, 10µm in diameter.
L9 10µm irregular totally porous silica gel having a chemically bonded, strongly acidic cation-exchange coating.
L10 Nitrile groups chemically bonded to porous silica microparticles, 3 to 10µm in diameter.
L11 Phenyl groups chemically bonded to porous silica microparticles, 3 to 10µm in diameter.
L12 Strong anion-exchange packing made by chemically bonding a quaternary amine to a solid silica spherical core, 30 to 50µm in diameter
L13 Trimethylsilane chemically bonded to porous silica microparticles, 3 to 10µm 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 10µm in diameter.
L16 Dimethyl silane chemically bonded to totally porous silica particles, 3 to 10µm in diameter.
L17 Strong cation exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 7 to 11µm in diameter.
L18 Amino and cyano groups chemically bonded to porous silica particles, 5 to 10µm in diameter.
L19 Strong cation exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the calcium form, 9µm in diameter.
L20 Dihydroxypropane groups chemically bonded to porous silica particles, 3 to 10µm in diameter.
L21 A rigid, spherical styrene-divinylbenzene copolymer, 5 to 10µm in diameter.
L22 A cation exchange resin made of porous polystyrene gel with sulfonic acid groups, about 10µm in size.
L23 An ion exchange resin made of porous polymethacrylate or polyacrylate gel with quaternary ammonium groups, about 10µm in size.
L24 A semi-rigid hydrophilic gel consisting of vinyl polymers with numerous hydroxyl groups on the matrix surface, 32 to 63µm in diameter.
L25 Packing having the capacity to separate compounds with a MW range from 100 to 5000 daltons (as determined by polyethylene oxide), applied to neutral,
L26 Butyl silane chemically bonded to totally porous silica particles, 5 to 10µm in diameter.
L27 Porous silica particles, 30 to 50µm in diameter.
L28 A multifunctional support, which consists of a high purity, 100Å, spherical silica substrate that has been bonded with anionic (amine) functionality
L29 Gamma alumina, reversed phase, low carbon percentage by weight, alumina-based polybutadiene spherical particles, 5µm diameter w/ a pore diameter of 80
L30 Ethyl silane chemically bonded to a totally porous silica particle, 3 to 10µm in diameter.
L31 A strong anion-exchange resin-quaternary amine bonded on latex particles attached to a core of 8.5µm macroporous particles having a pore size of 2000Å
L32 A chiral ligand-exchange packing- L-proline copper complex covanlently bonded to irregularly shaped silica particles, 5 to 10µm in diameter.
L33 Packing having the capacity to separate proteins 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, 9µm in diameter.
L35 A zirconium-stabilized spherical silica packing with a hydrophilic (diol-type) molecular monolayer bonded phase having a pore size of 150Å.
L36 L-Phenylglycine-3,5-dinitrobenzoyl on 5µm amino propyl silica
L37 Polymethacrylate gel for proteins 2000-40,000 MW
L38 Methacrylate-based SEC column for water-solubles
L39 Hydrophilic polyhydroxymethacrylate gel of totally porous spherical resin
L40 Cellulose tris-3,5dimethylphenylcarbamate coated porous silica particles, 5 to 20µm in diameter.
L41 Immobilized alpha 1 acid glycoprotein on special silica particles, 5µ
L42 Octylsilane and octadecylsilane chemically bonded to porous silica particles, 5µ to 10µ
L43 Pentafluorophenyl groups chemically bonded to silica particles, 5 to 10
L44 A multifunctional support, which consists of a high purity, 60 Å, spherical silica substrate that has been bonded with a cationic exchanger, sulfonic acid functionality in addition to a conventional reversed phase C8 functionality
L45 Beta cyclodextrin bonded to porous silica particles, 5 to 10
L46 Polystyrene/divinylbenzene substrate agglomerated with quaternary amine functionalised latex beads, 10µ
L47 High capacity anion exchange microporous substrate, 8 µm in diameter, dimension 250x4.0 mm
L48 Sulphonated, cross linked polystyrene with an outer layer of submicron porous, anion exchange microbeads, 15 µm in diameter
L49 Amylose tris-3,5-dimethylphenylcarbamate coated, porous, spherical silica particles, 5 to 10 µm in diameter.
L50 A strong cation exchange resin made of porous silica with sulphoproyl groups, 5 to 10 µm in diameter.
