HPLC Columns by USP Classification

Many methods currently published as USP monographs utilize the USP Classification of HPLC Columns. This listing of Cogent Columns by USP Classification is published as an aid to scientists using these monographs.

L1     C18 (ODS) bonded to Dp silica ranging from 1.8µ-10µ.            

• Cogent Bidentate C18™
• Cogent RP™ C18
• Cogent MS-MicroBee™ C18

L3     Silica, porous particles, un-bonded, Dp 1.8µ-10µ.

• Cogent NP™ Silica
• Cogent MS-MicroBee™ Silica
• Cogent Silica-C™

L7     Octyl (C8) bonded to Silica, 1.8µ-10µ.

• Cogent Bidentate C8™
• Cogent RP™ C8
• Cogent MS-MicroBee™ C8

L8     Aminopropyl Silane (NH2) bonded to Dp silica ranging from 1.8µ-10µ.

• Cogent NP™ Amino
• Cogent MS-MicroBee™ Amino

L10     Cyano (CN) groups bonded to Dp silica ranging from 1.8µ-10µ.

• Cogent NP™ Cyano
• Cogent MS-MicroBee™ Cyano

L11     Phenyl (C13H25) groups bonded to Dp silica ranging from 1.8µ-10µ.

• Cogent Phenyl Hydride™
• Cogent Biphenyl™
• Cogent RP™ Phenyl
• Cogent MS-MicroBee™ Phenyl
• Cogent RP™ Phenyl Hexyl

L20     DIOL groups bonded to Dp silica ranging form 1.8µ to 10µ.

• Cogent DIOL™
• Cogent NP DIOL™

L26     Butyl (C4) bonded to Dp Silica raning from 1.8µ to 10µ.

• Cogent RP C4™

L43     PentaFluoroPhenyl (PFP). Dp ranging from 1.8µ to 10µ

• Cogent PFP Pentafluorophenyl™

L62     C30 silane bonded phase on a fully porous spherical silica, 1.8 to 10µm in diameter.

• Cogent C30™

L85     An Alkyl chain longer than C8 and including weak cation-exchange, 1.0 to 50µm in diameter.

• Cogent UDA™