Con A Beads 4FF is an affinity chromatography medium that conjugates Con A with agarose to purify some glycoproteins.Con A is a plant haemagglutinin separated from giant bean（Jack bean, Canavalia ensiformis）,which can binds ɑ - D - pyran mannose, ɑ - D - pyran on glucose and Molecular groups related to its space position of the combination.Con A binds to carbohydrate molecules mainly in the hydroxyl part of C-3, C-4 and C-6.Con A combines better with D-pyranoid mannose than with D-pyranosaccharide.Con A Beads 4FF are used to isolate and purify some glycoproteins, membrane proteins, sugar lipids, polysaccharides, membrane vesicles with mannitin or glucoside residues, lgM, hormone lipoproteins and so on.Substances such as trypsin inhibitors in human serum, alkaline phosphatase, calf spleen phosphodiesterase, various variants of alpha-fetoglobulin and certain hormones such as chorionic gonadotropin (HCG) and luteinizing hormone (LH) can be purified with it.