K-Blue® Aqueous is a revolutionary 100% solvent-free, non-volatile TMB substrate. It contains 3,3’,5,5’ tetramethylbenzidine (TMB) and hydrogen peroxide (H2O2) in a one-bottle format with long-term stability and high activity. K-Blue Aqueous develops a deep blue colour in the presence of peroxidase labelled conjugate and is ideal for end users working under strict regulatory requirements. K-Blue Aqueous has been optimised for use with microwell applications, especially ELISA This substrate is not applicable for use with assays requiring a precipitating substrate. Sensitivity: This highly sensitive TMB substrate offers kinetic reactions similar to Neogen’s Enhanced K-Blue Substrate and offers low background development. Stability and Storage: K-Blue Aqueous is stable for 36 months when stored at 4°C. Appearance: Clear to light yellow-green solution Custom Packaging Service: Neogen can package K-Blue Aqueous in custom bottle sizes and volume fills to meet your specific packaging requirements. This service is a time and cost saving feature for any test kit manufacturer. For details on this service, please contact a Neogen representative. Order Details Product # Product Description 331175 K-Blue Aqueous TMB Substrate, 200 mL 331176 K-Blue Aqueous TMB Substrate, 500 mL 331177 K-Blue Aqueous TMB Substrate, 1 L 331257 K-Blue Aqueous TMB Substrate, 20 L (1 x 20 L) Reference Materials 331175, 331176, 331177, 331257 - K-Blue Aqueous TMB Substrate, Safety Data Sheet [English] For research and manufacturing use only.