Streptavidin Hi-Sur Mag (1 µm) are hydrophilic, streptavidin conjugated magnetic beads with diameter of 1 µm. The monolayer of streptavidin that is covalently coupled to their surface makes most of the biotin binding sites sterically available for binding of biotinylated nucleic acids, antibodies, or other biotinylated ligands and targets. Attribute to their very large surface area and unique surface coating, Streptavidin Hi-Sur Mag (1 µm) exhibit superior binding capacity and significantly low non-specific binding.