Description This enhanced DAB substrate kit gives a dark brown or black stain color. It is a enhanced sensitive colorimetric substrate used with horseradish peroxidase (HRP) immunohistochemistry (IHC) and immunoblotting applications. This DAB product has improved stability, ease of formulation, and greater sensitivity then routine DAB products. It is very good for weak signal IHC assay. Kit Contents VB-6003E-1 DAB Stock Solution (40×) ———–3 ml VB-6003E-2 DAB Enhancer Buffer————–120 ml Store at 2-8oC.ription