Welch Materials Ultisil HILIC Silica Guard Cartridge, 5 µm, 120 Å, 4.6 x 10 mm, 2 pk - H00808-04044

Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, while when column ID≥4.0mm, a 4.6×10mm cartridge is recommended. 2.1×10mm cartridge holder: 00808-01107, 4.6×10mm cartridge holder: 00808-01101 or 00808-01108(direct connect).

Welch guard cartridges for analytical columns are sold in packs, each pack containing 2 pieces (1 unit = 1 pack = 2 pcs).

Ultisil Hilic Silica features a specially treated silica matrix to enhance lifespan and stability when separating strongly polar compounds in high aqueous phases. It operates under multiple retention mechanisms in HILIC mode, offering complementary selectivity to reversed-phase chromatography for unique separation results. The column is optimized for high-volatility mobile phases (>80% organic solvent), making it ideal for mass spectrometry (MS) detection and sensitivity analysis.