TMB substrate ELISPOT

This solution contains 3,3’,5,5’-tetramethylbenzidine which is a substrate for horseradish peroxidase in our ELISPOT kits. The TMB substrate is ready-to-use and in combination with Streptavidin-HRP, the substrate produces a blue precipitate. Upon ordering, you will receive TMB substrate for 480 ELISPOT determinations.