Vial with 1000 nm Protein-G coated beads suspended in PBS buffer containing 0.05% Tween 20 and 0.05% Sodium Azide. Supplied at 10 mg/ml. The recombinant protein G (approx. 26 kDa) on the surface of our beads contains only IgG binding sites. The albumin, cell wall and cell membrane binding domains present on the wild-type protein G have been removed to optimize binding properties.