Welch Chromatography

What makes our chromatography solutions the best?


We are tenacious about UHP silica and bonded phases, so impurities won't impact your separations.


Our business has been built on a novel and honed chemistry. High Performance Chemistry.


Chromatography and sample prep are nowhere without reproducibility. We build consistency into everything that we do.

Recent News

Desalt Sample? G25 Purification Column Helps

Tandex G25 Tandex G25 is a kind of bead medium formed by 3 chlorine-1,2 propylene oxide cross-linked dextran, which is suitable for desalination and buffer replacement of biological macromolecules …

Oxiracetam on Ultisil AQ-C18, XB-C18

Sample Solution ColumnUltisil XB-C18, 5μm, 4.6×250mm (P/N 00201-31043)Mobile Phase0.05mol/L KH2PO4(adjust pH to 3.0 with phosphoric acid)Detection214nmTemperature28℃Flow Rate0.6ml/minInje…

Oxiconazole on Ultisil LP-C18

Reference ColumnUltisil® LP-C18, 5μm, 4.6×250mm    PN: 00208-31043Mobile Phase10% tetramethylammonium hydroxide: water: acetonitrile =20:380:850, adjust pH to 4.7 with phosp…

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