Alkaline Phosphatase activity assay with p-Nitrophenylphosphate as a substrate.Alkaline Phosphatase (ALP) is distributed in a variety of tissues such as liver, bone, and small intestine in animals. The change of the enzyme activity in tissues is an im-portant hallmark for physiological phenomena as osteo-genesis and so on. This kit is for Alkaline Phosphatase assay in a simultaneous multi-sample assay format with a microplate using p-Nitrophenylphosphate as a substrate.