Product Description Zyglo® ZP-4D Dry Powder Developer ZP-4D is a free flowing, white, fluffy powder used as a high sensitivity dry powder developer for penetrant inspection. It is supplied ready to use and forms a thin film on parts which enables it to enhance indications of ultra-fine discontinuities. ZP-4D is listed on the QPL SAE AMS 2644 Qualified Product List and is approved for use by Pratt & Whitney. Benefits Even, thin developer coverage Enhances visibility of ultra-fine discontinuities Pratt & Whitney approved QPL SAE AMS 2644 Qualified Product List Approved for use by Pratt & Whitney
