The ChromaLink™ One-Shot Biotin Kit (B-9007) biotinylates 100 µg of antibody at 1 mg/mL. We also have an additional kit, the ChromaLink™ Biotin Labeling Kit (B-9007) which is more flexible in format and can label up to 5 reactions of between 25 µg to 1 mg per 100 µL reaction. The reaction conditions were specifically designed to match the concentrations and quantities of most commercially available antibodies.