Welch preparative guard column cartridges use the same packing as the preparative column, which can intercept some of the same polar substances in the sample and prevent them from contaminating and damaging the packing materials in the preparative column. 10×10mm cartridge holder: 00808-01116, 21.2×10mm cartridge holder: 00808-01106, 30×10mm cartridge holder: 00808-01117, 50×10mm cartridge holder: 00808-01110.
Xtimate Phenyl-Hexyl column utilizes Welch’s patented organic-inorganic hybrid surface technology to modify the silica gel matrix, extending the pH stability range to 1.0–12.5. It offers excellent selectivity for compounds containing phenyl and short-chain alkyl groups, with strong retention for aromatic, polar, and amine-containing compounds.
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