ABTS, solution (Novex®) May be used as a substrate for horseradish peroxidase (HRP) in ELISAs. Substrate: ABTS Product Size: 500 mL Substrate Type: HRP (Horseradish Peroxidase) Substrate Detection Method: Colorimetric Substrate Properties: Chemical Substrate Shipping Condition: Wet Ice Regulatory Statement: For Research Use Only. Not for use in diagnostic procedures. Store at 2-8°C