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As a complementary developer for penetrant inspections, ZP-5B forms an opaque white coating that makes a contrasting background for indications. This white powder developer is mixed with water for use and disperses quickly to form an opaque white suspension, but must be continually agitated during use to ensure uniformity of mix as developer will settle out on standing.
ZP-5B can be used to enhance fluorescent indications during FPI Type 1 testing or used at higher concentrations to form an opaque white background for visible / color-contrast Type 2 dye penetrant inspections.
ZP-5B is listed on the QPL SAE AMS 2644 Qualified Product List.
NDT TypeFluorescent Penetrant Testing, Visible Penetrant Testing
Penetrant TypeType 1, Type 2
Developer FormForm c
Ideal ApplicationAircraft, Automotive, Castings, Construction, Forgings, Leak testing, Pressure vessels, Welds
Defect ExamplesCracks, Seams
StandardsAECL, AMS 2644, AMS 2647, ASME, ASTM E1417, Boeing BAC 5423 PSD 6-46 or 8-4, GE P3TF2, QPL SAE AMS 2644
Dry powder developer for Form a penetrant testing and QPL SAE AMS 2644 approved.
Solvent-based developer for Type 1 Form d or Type 2 Form e penetrant testing, QPL SAE AMS 2644
LED UV lamps and black lights for non-destructive testing
Portable, handheld LED UV lamp for black light inspection during fluorescent PT or MT testing
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