Description_x000D_ Application_x000D_ Chemiluminescent Peroxidase Substrate-3 has been used for the quantification of aptamer binding. It has also been used in endopeptidase assay to determine the enzymatic activity of botulinum neurotoxins (BoNTs)._x000D_ CPS3 formulations are economically priced and outperform the most commonly used competitors′ products. This two component system provides low nanogram detection with superior signal-to-noise ratio. In addition, the components are stable after mixing, adding to the flexibility of usage.