Q-Bright Endure Plus Chemiluminescent Detection Kit - Q-Bright® Endure Plus (62-0200-0800) chemiluminescent detection reagent is a luminol-based substrate for horseradish peroxidase (HRP), providing a light output for up to 24h. Q-Bright® Endure Plus provides 2X the signal of Q-Bright® Endure without compromising on signal duration, providing long-lasting, mid-femtogram levels of detection in western blot, ELISA and other chemiluminescent-based applications.