pNPP Microwell Alkaline Phosphatase (AP) Stabilized Substrate One Component

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pNPP Alkaline Phosphatase Microwell Substrate (p-nitrophenylphosphate) is a soluble substrate used with the enzyme alkaline phosphatase designed for various qualitative or quantitative immunoassays but not recommended for membrane or immunohistochemical applications where a precipitating reaction product is required. The substrate is supplied as a one component ready to use solution. Initially the substrate should be colorless to pale yellow in appearance. When this substrate system is reacted with alkaline phosphatase, a soluble, yellow product is obtained.