K-Blue Luminescent is a stabilized luminescent substrate for use with horseradish peroxidase immunoassays. It contains both luminol and hydrogen peroxide (H2O2) in a two-bottle format with long-term stability, high sensitivity, and excellent signal to noise. Maximal light emission occurs at 430 nm in the presence of peroxidase labeled conjugate. K-Blue Luminescent is compliant with Annex XVII for REACH and contains no hazardous substances at or above published reporting levels. Stable for a minimum of 18-months when stored at 2-8C.