Ultisil MM NH2/CN, Cartridge: 5µm, 120Å, 2.1×10mm, 2pcs

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 MM C18/SCX column features a mixed-mode stationary phase with C18 and SCX bonding, offering distinct selectivity from traditional single bonded phase columns. Featuring dual retention mechanisms of hydrophobic interaction and ion exchange, it is ideal for analyzing unknown compounds, particularly in metabolite research. It allows for the separation of highly polar compounds without the need for ion-pairing reagents, and allows for direct MS analysis.