APStop Solution (10X concentrate) is specially formulated for use with KPL colorimetric substrates for alkaline phosphatase detection in microwell applications, including BluePhos Microwell Phosphatase Substrate (Catalog Number 95059-220), FirePhos Microwell Phosphatase Substrate System (Catalog Number 95059-214) and pNPP Microwell Substrate System (Catalog number 95059-170)

• Dilute with water and use

APStop works with all KPL AP colorimetric substrates. Plates can be read up to 2 hours after addition of APStop. Use of APStop promotes plate-to plate consistency.

APStop Solution allows the user to stop the reaction at a specific point for consistent results from assay-to-assay.