Ultisil HILIC Amphion II, Semi-Prep Cartridge: 5µm, 120Å, 10×10mm

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.

Ultisil HILIC Amphion II is a zwitterionic HILIC column that employs covalent bonding technology to attach zwitterionic functional groups (containing both cations and anions). This eliminates the need for ion-pairing reagents. With exceptionally strong hydrophilicity, it effectively retains highly polar ionic compounds that exhibit weak or no retention in reversed-phase chromatography, as well as basic pharmaceuticals.