100 ml Tetramethyl Benzidine Chromogenic Substrate has been specifically formulated to be used for performing enzyme-linked immunosorbent assay in hospitals & laboratories. It is completely reliable in nature and assures high effectiveness. This substrate produces blue colored end product that can be read by spectrophotometer at 370nm. This substrate is completely free from any impurities and comprises accurate chemical composition. 100 ml Tetramethyl Benzidine Chromogenic Substrate is tested on several parameters for ensuring accurate results and high client satisfaction.