L1—Octadecyl silane chemically bonded to porous silica or ceramic micro-particles,3to 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,30to 50µm in diameter. L3—Porous silica particles,5to 10µm in diameter. L4—Silica gel of controlled surface porosity bonded to a solid spherical core,30to 50µm in diameter.L5—Alumina of controlled surface porosity bonded to a solid spherical core,30to 50µm in diameter.L6—Strong cation-exchange packing–sulfonated fluorocarbon polymer coated on a solid spherical core,30to 50µm in diameter. L7—Octylsilane chemically bonded to totally porous silica particles,3to 10µm in diameter. L8—An essentially monomolecular layer of aminopropylsilane chemically bonded to totally porous silica gel support,10µm in diameter. L9—10-µm irregular or spherical,totally porous silica gel having a chemically bonded,strongly acidic cation-exchange coating. L10—Nitrile groups chemically bonded to porous silica particles,3to 10µm in diameter. L11—Phenyl groups chemically bonded to porous silica particles,5to 10µm in diameter. L12—Astrong anion-exchange packing made by chemically bonding a quaternary amine to a solid silica spherical core,30to 50µm in diameter. L13—Trimethylsilane chemically bonded to porous silica particles,3to 10µm in diameter. L14—Silica gel 10µm in diameter having a chemically bonded,strongly basic quaternary ammonium anion-exchange coating. L15—Hexylsilane chemically bonded to totally porous silica particles,3to 10µm in diameter.L16—Dimethylsilane chemically bonded to porous silica particles,5to 10µm in diameter. L17—Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form,7to 11µm in diameter. L18—Amino and cyano groups chemically bonded to porous silica particles,3to 10µm indiameter.L19—Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the calcium form,about 9µm in diameter. L20—Dihydroxypropane groups chemically bonded to porous silica particles,5to 10µm in diameter.L21—Arigid,spherical styrene-divinylbenzene copolymer,5to 10µm in diameter. L22—Acation-exchange resin made of porous polystyrene gel with sulfonic acid groups,about 10µm in size. L23—An anion-exchange resin made of porous polymethacrylate or polyacrylate gel with quaternary ammonium groups,about 10µm in size. L24—Asemi-rigid hydrophilic gel consisting of vinyl polymers with numerous hydroxyl groups on the matrix surface,32to 63µm in diameter.5 L25—Packing having the capacity to separate compounds with a molecular weight range from 100–5000(as determined by polyethylene oxide),applied to neutral,anionic,andcationic water-soluble polymers.Apolymethacrylate 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,5to 10µm in diameter. L27—Porous silica particles,30to 50µm in diameter. L28—Amultifunctional support,which consists of a high purity,100Å,spherical silica substrate that has been bonded with anionic exchanger,amine functionality in addition to aconventional reversed phase C8functionality. L29—Gamma alumina,reverse-phase,low carbon percentage by weight,alumina-based polybutadiene spherical particles,5µm in diameter with a pore volume of 80Å. L30—Ethyl silane chemically bonded to totally porous silica particles,3to 10µm in diameter. L31—Astrong anion-exchange resin-quaternary amine bonded on latex particles attached to a core of 8.5-µm macroporous particles having a pore size of 2000Åand consisting of ethylvinylbenzene cross-linked with 55%divinylbenzene. L32—Achiral ligand-exchange packing–L-proline copper complex covalently bonded to irregularly shaped silica particles,5to 10µm in diameter. L33—Packing having the capacity to separate dextrans by molecular size over a range of 4,000to 500,000Da.It is spherical,silica-based,and processed to provide pHstability.6 L34—Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the lead form,about 9µm in diameter. L35—Azirconium-stabilized spherical silica packing with a hydrophilic (diol-type)molecular monolayer bonded phase having a pore size of 150Å. L36—A3,5-dinitrobenzoyl derivative of L-phenylglycine covalently bonded to 5-µm aminopropyl silica. L37—Packing having the capacity to separate proteins by molecular size over a range of 2,000to 40,000Da.It is a polymethacrylate gel. L38—Amethacrylate-based size-exclusion packing for water-soluble samples. L39—Ahydrophilic polyhydroxymethacrylate gel of totally porous spherical resin. L40—Cellulose tris-3,5-dimethylphenylcarbamate coated porous silica particles,5to 20µm in diameter.L41—Immobilized a1-acid glycoprotein on spherical silica particles,5µm in diameter. L42—Octylsilane and octadecylsilane groups chemically bonded to porous silicaparticles,5µm in diameter. L43—Pentafluorophenyl groups chemically bonded to silica particles by a propyl spacer,5to 10µm in diameter. L44—Amultifunctional support,which consists of a high purity,60Å,spherical silica substratethat has been bonded with a cationic exchanger,sulfonic acid functionality in addition to a conventional reversed phase C8functionality.L45—Beta cyclodextrin bonded to porous silica particles,5to 10µm in diameter. L46—Polystyrene/divinylbenzene substrate agglomerated with quaternary amine functionalized latex beads,10µm in diameter. L47—High-capacity anion-exchange microporous substrate,fully functionalized with trimethlyamine groups,8µm in diameter.7 L48—Sulfonated,cross-linked polystyrene with an outer layer of submicron,porous,anion-exchange microbeads,15µm in diameter. L49—Areversed-phase packing made by coating a thin layer of polybutadiene onto spherical porous zirconia particles,3to 10µm in diameter.8 L50—Multifunction resin with reversed-phase retention and strong anion-exchange functionalities.The resin consists of ethylvinylbenzene,55%cross-linked with divinylbenzene copolymer,3to 15µm in diameter,and a surface area not less than 350m2per g.Substrate iscoated with quaternary ammonium functionalized latex particles consisting of styrene cross-linked with divinylbenzene.9L51—Amylose tris-3,5-dimethylphenylcarbamate-coated,porous,spherical,silica particles,5to 10µm in diameter.10 L52—Astrong cation exchange resin made of porous silica with sulfopropyl groups,5to 10µm in diameter.11 L53—Weak cation-exchange resin consisting of ethylvinylbenzene,55%cross-linked withdivinylbenzene copolymer,3to 15µm diameter.Substrate is surface grafted with carboxylic acid and/or phosphoric acid functionalized monomers.Capacity not less than 500µEq/column.12L54—Asize exclusion medium made of covalent bonding of dextran to highly cross-linked porous agarose beads,about 13µm in diameter.13 L55—Astrong cation-exchange resin made of porous silica coated with polybutadiene–maleic acid copolymer,about 5µm in diameter.14 L56—Isopropyl silane chemically bonded to totally porous silica particles,3to 10µm in diameter.15L57—Achiral-recognition protein,ovomucoid,chemically bonded to silica particles,about 5µm in diameter,with a pore size of 120Å. L58—Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the sodium form,about 7to 11µm in diameter.16 L59—Packing having the capacity to separate proteins by molecular weight over the range of 10to 500kDa.It is spherical (10µm),silica-based,and processed to provide hydrophilic characteristics and pHstability.17USP28 L60—Spherical,porous silica gel,3or 5µm in diameter,the surface of which has been covalently modified with palmitamidopropyl groups and endcapped with acetamidopropyl groups to a ligand density of about 6µmoles per m2.18USP28L1是C18柱L1：十八烷基键合多硅胶或无机氧化物微粒固定相，简称ODS柱L2：30～50mm表面多薄壳型键合十八烷基固定相，简称C18柱L3：多硅胶微粒，即一般的硅胶柱L4：30～50mm表面多薄壳型硅胶柱L5：30～50mm表面多薄壳型氧化铝柱L6：30～50mm实心微球表面包覆磺化碳氟聚合物，强阳离子交换柱L7：全多硅胶微粒键合C8官能团固定相，简称C8柱L8：全多硅胶微粒键合非交联NH2固定相，简称NH2柱L9：强酸性阳离子交换基团键合全多不规则形硅胶固定相，即SCX柱L10：多硅胶微球键合氰基固定相（CN），简称CN柱L11：键合苯基多硅胶微球固定相，简称苯基柱L12：无微球键合季胺功能团的强阴离子交换柱L13：三乙基硅烷化学键合全多硅胶微球固定相（C1），简称C1柱L14：10mm硅胶化学键合强碱性季铵盐阴离子交换固定相，简称SAX柱L15：已基硅烷化学键合全多硅胶微球固定相，简称C6柱L16：二甲基硅烷化学键合全多硅胶微粒固定相C2柱L17：氢型磺化交联苯乙烯-二乙烯基苯共聚物,强阳离子交换柱L18：3～10mm全多硅胶化学键合胺基（NH2）和氰基（CN）柱L19：钙型磺化交联苯乙烯－二乙烯基苯共聚物，强阳离子交换柱L20：二羟基丙烷基化学键合多硅胶微球固定相（Diol），简称二醇基柱L21：刚性苯乙烯－二乙烯基苯共聚物微球填料柱L22：带有磺酸基团的多苯乙烯阳离子交换柱L23：带有季胺基团的聚甲基丙烯酸甲酯或聚丙烯酸酯多离子交换柱L24：表面含有大量羟基的半刚性聚乙烯醇亲水凝胶柱L25：聚甲基丙烯酸酯树脂交联羟基醚（表面含有残余羧基功能团）树脂。