GS24-HC- GlykoPrep H cleanup module, 24-ct (formerly ProZyme). Contains GlykoPrep HC solid-phase extraction spin cartridges packed with ~5 mg of Hypercarb porous graphitic carbon (PGC). These are designed for purification of glycans from non-carbohydrate material, including salts and proteins. When samples are loaded on the column, salts pass through, while glycans and protein adsorb onto the matrix. The glycans may then be selectively eluted from the column.