Agilent, 821725-906, AdvanceBio Glycan Mapping 120Å, 2.1 x 5 mm, 2.7 µm, guard, 3/pk

AdvanceBio Glycan Mapping 120Å, 2.1 x 5 mm, 2.7 µm, guard, 3/pk is designed for protecting analytical glycan-mapping columns operated in hydrophilic interaction liquid chromatography. Each stainless-steel guard unit is 5 mm long with a 2.1 mm internal diameter and uses 2.7 µm superficially porous silica particles bonded with amide HILIC chemistry. The packing has a 120 Å pore size and is supplied in acetonitrile/water. Installing a guard of the same phase upstream of an AdvanceBio Glycan Mapping analytical column helps retain contamination before it enters the main separation bed while preserving comparable HILIC selectivity for labeled or unlabeled glycan workflows. This is a three-pack of guard columns, not a full-length analytical column. The phase supports pH 2–7, temperatures up to 40 °C and pressure up to 600 bar. The short 5 mm bed adds a small protective section rather than replacing the analytical resolving length. Applications include biopharmaceutical glycan analysis by LC and LC-MS where the 120 Å amide chemistry and 2.1 mm column format are required. The exact 2.7 µm superficially porous packing distinguishes this consumable from conventional fully porous HILIC columns.