ZP-4D is a noncombustible dry powder developer for form A penetrant testing that is ideal for highly sensitive fluorescent penetrant processes. ZP-4D is applied to oven dried parts following the use of penetrants and forms a thin film on parts that enhances the visibility 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.
Even, thin developer coverage
Enhances visibility of ultra-fine discontinuities
QPL SAE AMS 2644 Qualified Product List
Approved for use by Pratt & Whitney
10 lb / 4.53 kg pail: 01-3330-69 20 lb / 9.07 kg pail: 01-3330-75
NDT Type: Fluorescent Penetrant Testing Penetrant Type: Type 1 Penetrant Methods: ALL, Method A, Method B, Method C, Method D Developer Form: Form a