VECTOR Blue Alkaline Phosphatase (AP) Substrate Kit produces a blue, heat-stable reaction product. This chromogen can be used singly or in combination with other alkaline phosphatase or peroxidase substrates for multiple label applications. Sections stained with the VECTOR Blue substrate can be dehydrated, cleared, and permanently mounted; however, non-xylene clearing agents and non-xylene based mounting media (such as VectaMount) must be used because the reaction product is soluble in xylene. VECTOR Blue can also be used on blots in applications such as ELISPOT, singly or in combination with a peroxidase substrate such as AEC. The stock solutions in this kit are provided in convenient dropper bottles, with sufficient volume for 200 ml working solution.