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U.S. Pharmacopeia (USP) Columns List

Click on the L# on the left to view and compare the columns in that category.
No. Packing material Recommended column
L1 Octadecyl silane chemically bonded to porous or nonporous silica or ceramic microparticles, 1.5 to 10 μm in diameter, or a monolithic rod. C18 Silica C18M C18U
L17 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the hydrogen form, 6 to 12 μm in diameter. SUGAR SH1011 SUGAR SH1821 RSpak KC-811
L19 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the calcium form, 5-15 μm in diameter. SUGAR SC1011 SUGAR SC1211 EP SC1011-7F USPpak MN-431
L20 Dihydroxypropane groups chemically bonded to porous silica or hybrid particles, 1.5-10 μm in diameter, or a monolithic silica rod. PROTEIN KW-800 series KW400 series PROTEIN LW-803 PROTEIN LW-403 4D
L21 A rigid, spherical styrenedivinylbenzene copolymer, 3 to 30 μm in diameter. GPC KF-800, KD-800, KF-400HQ, HK-400, LF, RSpak DS-613 RSpak DS-413
L22 A cation-exchange resin made of porous polystyrene gel with sulfonic acid groups, 5-15 μm in diameter. CXpak P-421S SUGAR SP0810 SUGAR SC1011 SUGAR KS-800 series SUGAR SC1211 SUGAR SZ5532 EP SC1011-7F USPpak MN-431 RSpak DC-613 SUGAR SH1011 SUGAR SH1821 RSpak KC-811
L23 An anion-exchange resin made of porous polymethacrylate or polyacrylate gel with quartenary ammonium groups, 7-12 μm in size. IEC QA-825 IC I-524A
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, and cationic water-soluble polymers. A polymethacrylate resin base, cross-linked with polyhydroxylated ether (surface contained some residual carboxyl functional groups) was found suitable. OHpak SB-802 HQ OHpak SB-802.5 HQ OHpak LB-802.5
L33 Packing having the capacity to separate dextrans by molecular size over a range of 4,000 to 500,000 Da. It is spherical, silica-based, and processed to provide pH stability. PROTEIN KW-800 series KW400 series PROTEIN LW-803 PROTEIN LW-403 4D
L34 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the lead form, 7 to 9 μm in diameter. SUGAR SP0810
L37 Packing having the capacity to separate proteins by molecular size over a range of 2,000 to 40,000 Da. It is a polymethacrylate gel. OHpak SB-803 HQ OHpak LB-803
L38 A methacrylate-based size-exclusion packing for water-soluble samples. OHpak SB-800 HQ series OHpak LB-800 series
L39 A hydrophilic polyhydroxymethacrylate gel of totally porous spherical resin. ODP2 HP RSpak DM-614 OHpak SB-800 HQ series OHpak LB-800 series
L45 Beta cyclodextrin, R,S-hydroxypropyl ether derivative, bonded to porous silica particles, 3-10 μm in diameter. ORpak CDBS-453
L58 Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the sodium form, about 6 to 30 μm in diameter. CXpak P-421S SUGAR KS-800 series RSpak DC-613
L59 Packing for the size-exclusion separations of proteins (separation by molecular weight) over the range of 5 to 7000 kDa. The packing is a spherical 1.5- to 10-μm, silica or hybrid packing with a hydrophilic coating. PROTEIN KW-800 series KW400 series PROTEIN LW-803 PROTEIN LW-403 4D
L67 Porous vinyl alcohol copolymer with a C18 alkyl group attached to the hydroxyl group of the polymer, 2 to 10 μm in diameter. Asahipak ODP-50
L71 A rigid, spherical polymetacrylate, 4 to 6 μm in diameter. RSpak DE-613 RSpak DE-413 RSpak DE-213
L76 Silica based, weak cation-exchange material, 5 μm in diameter. Substrate is surface polymerized polybutadiene-maleic acid to provide carboxylic acid functionalities. Capacity not less than 29 μEq/column. IC YK-421
L82 Polyamine chemically bonded to cross-linked polyvinyl alcohol polymer, 5 μm in diameter. Asahipak NH2P-50
L89 Packing having the capacity to separate compounds with a molecular weight range from 100 to 3000 (as determined by polyethylene oxide), applied to neutral and anionic water-soluble polymers. A polymethacrylate resin base, cross-linked with polyhydroxylate ether (surface contains some residual cationic functional groups). OHpak SB-802.5 HQ OHpak LB-802.5


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