Streptavidin is a tetrameric protein containing four biotin-binding sites. Recombinant streptavidin is immobilized on a highly crosslinked beaded agarose destined to strongly bind biotinylated biomolecules.||Bead Geometry & Size:|Spherical, Standard: 50-150um||Crosslinked:|Highly Crosslinked||Agarose:|6%||Free Biotin Binding Capacity:|>120 nmol/ml gel||Antimicrobial Agent:|20% ethanol||Storage and Stability:|Store at 4°C. Stable for 6 months after receipt. For maximum recovery of product, centrifuge the original vial prior to removing the cap.