Horseradish peroxidase (HRP) and biotin conjugates with various antibodies and proteins for immunochemical studies - ELISA, Western blotting, immunofluorescence.

HRP conjugates are used for detection and quantification of antigens. HRP catalyzes an oxidative reaction leading to the formation of a colored product. Biotin conjugates are used in systems using streptavidin or avidin, which have an affinity for biotin, to amplify the signal.