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ZP-4D is a dry powder, Form a developer 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 TypeFluorescent Penetrant Testing
Penetrant TypeType 1
Developer FormForm a
Ideal ApplicationCracks, Forgings, Porosity, Seams, Welds
Defect ExamplesCastings, Critical components, Turbine components
StandardsAECL, AMS 2644, AMS 2647, ASME BPVC, ASTM E1417, ASTM E165/E165M-18, Boeing BAC 5423 PSD 6-46 or 8-4, Boeing PS-21202, GE P3TF2, Honeywell EMS 52309, ISO 3452-2, MIL-STD-2132, MIL-STD-271, Pratt & Whitney PMC 4356, QPL SAE AMS 2644, Rolls Royce RRP 58003 (CSS 232), SAFRAN Pr 5000/In 5000
Penetrants, developers, emulsifiers and removers
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