Stabilized 4-methylumbelliferyl phosphate (MUP) liquid substrate reagent for detecting alkaline phosphatase ALP, e.g. in ELISA. This single reagent produces a highly fluorescent product (360/450 nm) when dephosphorylated by ALP. The fluorescent product can also be visualized under a UV light. Key Features: Stable single reagent. Highly sensitive fluorescence detection. Can be visualized under a UV light. Method: FL360/450nm. Samples: Biological. Species: All. Procedure: Assay takes 30 min. Kit size: 600 tests.