Welch Materials Ultisil XS-C18 Guard Cartridge, 5 µm, 120 Å, 4.6 x 10 mm, 2 pk - H00808-04046

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 XS-C18 utilizes a unique multilayer bonding process with high bonding density and close ligand spacing, providing excellent spatial shape selectivity. It offers high column efficiency, high column capacity, and high carbon loading, resulting in strong compound retention and exhibiting outstanding steric hindrance selectivity. The column is particularly effective for separating small-molecule isomers, including structural and positional isomers.