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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.
NDT Type: Fluorescent Penetrant Testing
Penetrant Type: Type 1
Penetrant Methods: ALL, Method A, Method B, Method C, Method D
Developer Form: Form a
Ideal Application: Cracks, Forgings, Porosity, Seams, Welds
Defect Examples: Castings, Critical components, Turbine components
Standards: AECL, AMS 2644, AMS 2647, ASME, ASTM E1417, Boeing BAC 5423 PSD 6-46 or 8-4, Boeing PS-21202, GE P3TF2, Honeywell EMS 52309, ISO 3452-2, Pratt & Whitney PMC 4356, QPL SAE AMS 2644
Product Data Sheet
Safety Data Sheet
Penetrant Testing Process Guide
How to Do Fluorescent Penetrant Testing
Penetrant Product Brochure
Shelf Life Statement