EZEnrich Polyubiquitin Bead, 300 ul. EZEnrich Polyubiquitin Bead, Binding Capacity: Approx 2.06 ug/20 ul of slurry, Bead content: 300 ul of 50% slurry of UIM-UBA Sepharose Beads in PBS with 0.1% Sodium Azide, Total Capacity: 15 enrichments with 20 ul bead, for Isolation protein, Size: 300 ul