High Performance LC
	USP - US Pharmacopeial Convention The following list of packings is intended to be a convenient reference for the chromatographer. Within any category of packings or phases listed below, there may be a wide range of columns available. The individual monographs indicate where chromatographic conditions need further specification. The chart below provides a guide to selecting HPLC-columns which meet the specifications of the USP. Very often the USP specifications are so broad that several column types meet the basic specifications. The columns from Dr. Maisch GmbH are also available in other dimensions.
	L1: Oytadecyl silane chemically bonded to porous silica microparicles, 5 - 10 µm in diameter.     ReproSil-Pur C18-AQ, 5µ 250 x 4.6 mm Part.No.: R15.aq.s2546     ReproSil-Pur ODS-3, 5 µm 250 x 4.6 mm Part.No.: R15.93.s2546     ReproSil 100 C18, 5 µm 250 x 4.6 mm Part.No.: R15.96.s2546     ReproSil 80 ODS-2 (Alternative to Spherisorb) 250 x 4.6 mm Part.No.: R05.92.s2546     Equisil ODS (Alternative to Hypersil) 250 x 4.6 mm Part.No.: E25.9e.s2546               L-3: Porous silica microparticles, 5 - 10 µm in diameter.     ReproSil-Pur Si, 5 µm 250 x 4.6 mm Part.No.: R15.00.s2546     ReproSil 100 Si, 5 µm 250 x 4.6 mm Part.No.: R15.06.s2546     ReproSil 80 Si, 5 µm 250 x 4.6 mm Part.No.: R05.00.s2546     ReproSil 70 Si, 5 µm 250 x 4.6 mm Part.No.: R05.06.s2546     ReproSil-Pur 60 Si, 5 µm 250 x 4.6 mm Part.No.: R05.0p.s2546               L-7.: Octyl silane chemically bonded to totally porous microsilica particles, 5 - 10 µm in diameter.     ReproSil-Pur C8, 5 µm 250 x 4.6 mm Part.No.: R15.8e.s2546     ReproSil 100 C8, 5 µm 250 x 4.6 mm Part.No.: R15.86.s2546     ReproSil 80 Octyl, 5 µm 250 x 4.6 mm Part.No.: R05.8e.s2546               L-8: An essentially monomolecular layer of aminopropylsilane chemically bonded to totally poroussilica gel support, 10 µm in diameter.     ReproSil-Pur NH2, 10 µm 250 x 4.6 mm Part.No.: R10.a0.s2546                 L-9: 10 µm irregular totally porous silica gel having a strong acidic cation-exchange bonded coating.     Partisil SCX, 10 µm 250 x 4.6 mm Part.No.: P00.sc.s2546               L-10: Nitrile groups chemically bonded to porous silica particles, 5 - 10 µm in diameter.     ReproSil-Pur CN, 5 µm 250 x 4.6 mm Part.No.: R15.ce.s2546     ReproSil 100 CN, 5 µm 250 x 4.6 mm Part.No.: R15.c6.s2546     ReproSil 80 CN, 5 µm 250 x 4.6 mm Part.No.: R05.co.s2546           L-11: Phenyl groups chemically bonded to porous silica particles, 5 - 10 µm.     ReproSil-Pur Phenyl, 5 µm 250 x 4.6 mm Part.No.: R15.pe.s2546     ReproSil 100 Phenyl, 5 µm 250 x 4.6 mm Part.No.: R15.p6.s2546           L-13: Trimethylsilane chemically bonded to porous silica particles, 5 - 10 µm in diameter.     ReproSil-Pur C1, 5 µm 250 x 4.6 mm Part.No.: R15.10.s2546     ReproSil 80 C1, 5 µm 250 x 4.6 mm Part.No.: R05.10.s2546           L-14: Silica gel, 10 µm in diameter, having a chemically bonded, strongly basic quaternary ammonium anion exchange coating.     Partisil SAX, 10 µm 250 x 4.6 mm Part.No.:p00.sa.s2546     Nucleosil 10 SB, 10 µm 250 x 4.6 mm Part.No.:n10.sa.s2546                 L-15: Hexyl silane chemically bonded to totally porous silica.       Reprosil 80 C6, 5 µm 250 x 4.6 mm Part.No.: R05.60.s2546               L-16: Diemthylsilane chemically bonded to porous silica particles, 5 - 10 µm.     Polygosil C2, 5 µm 250 x 4.6 mm Part.No.: N15.27.s2546               L-17: Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinyl-benzene copolymer in the hydrogen from, 7 - 11 µm in diameter.     Repro-Gel H, 9 µm 300 x 8 mm Part.No.: Su9.h0.s3008               L-18: Amino and Cyano groups chemically bonded to porous silica particels, 3 - 10 µm     Partisil PAC, 10 µm 250 x 4.6 mm Part.No.: P00.ac.s2546               L-19: Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinyl-benzene copolymer in the calcium from, 7 - 11 µm in diameter.     Repro-Gel Ca, 9 µm 300 x 8 mm Part.No.: Su9.ca.s3008               L-20: Dihydroxypropane groups chemically bonded to porous silica particles, 5 - 10 µm in diameter.     ReproSil-Pur Diol, 5 µm 250 x 4.6 mm Part.No.: R15.d0.s2546     ReproSil 100 Diol, 5 µm 250 x 4.6 mm Part.No.: R15.d6.s2546     ReproSil 80 Diol, 5 µm 250 x 4.6 mm Part.No.: R05.d0.s1246               L-21: A rigid spherical styrene-divinylbenzene copolymer, 5 - 10 µm in diameter:     Repromer RP1, 5 (or 10) µm (100A°) 250 x 4.6 mm Part.No.: Rm15.rp1.s2546     Repromer RP3, 5 (or 10 ) µm (300A°) 250 x 4.6 mm Part.No.: Rm35.rp3.s2546     Repromer RP-S, 8 µm (1000A°) 250 x 4.6 mm Part.No.: Rm68.rps.s2546               L-22: A cation exchange resin of porous polystyrene gel with sulfonic acid groups, 10 µm in size.     Repro-Gel H, 9 µm 300 x 8 mm Part.No.: su9.h0.s3008             L-23: An anion-exchange resin made of porous polymethacrylate or polycarylate gel with quaternary ammonium groups, about 10 µm in size.     Repro-Gel Hema SQL   Part.No.:hema.sql               L-26:Butyl silane chemically bonded to totally porous silica particles, 5 to 10 µm in diameter.     ReproSil-Pur C4 (Butyl), 5 µm 250 x 4.6 mm Part.No.: R15.4e.s2546     ReproSil 100 C4 (Butyl), 5 µm 250 x 4.6 mm Part.No.: R15.46.s2546               L-34: Strong cation-exchange resin of sulfonated cross-linked styrene-divinylbenzene co- polymer in the lead from, about 9 µm in diameter:     Repro-Gel Pb, 9 µm 300 x 8 mm Part.No.: su9.pb.s3008               L-37: Packing having the capacity to separate proteins by molecular size over a range of 2 000 to 40 000 daltons. It is a polymethycrylate gel.     Repro-Gel Hema 40 SEC 250 x 8 mm Part.No.:hema.40.s2508               L-41: Immobilized a1-acid glycoprotein on spherical silica particles, 5 µm in diameter     Chiral AGP, 5 µm 100 (150) x 4 mm Part.No.:AGP100.4               L-43: Pentafluorophenyl groups chemically bonded to silica particles, 5 -10 µm in diameter     PFP 5 µm 250 x 4.6 mm or 150 x 4.6 mm                             up