200 µl of (0.5 mg/ml) antibody. This product is supplied as 400 ul of 50% slurry containing 200 ul gel (100 ug antibody/200 ul gel) in 0.01M Phosphate (pH 7.2), 0.1M NaCl and 0.1% sodium azide. Agarose beads are 60-160 micron.