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A Method B lipophilic emulsifier, ZE-4E diffuses into the penetrant to clear the penetrant from the surface of the part being inspected. It is rinsed from the part by water, carrying penetrant off the part surface. Designed to be used with post-emulsifiable penetrants Level 2 ZL-2C PE, Level 3 ZL-27A PE or Level 4 ZL-37 PE. Benefits include low volatility and a high flash point, so ZE-4E can be used in open immersion tanks.
NDT TypeFluorescent Penetrant Testing, Visible Penetrant Testing
Penetrant TypeType 1, Type 2
Penetrant MethodsMethod B
Ideal ApplicationCastings, Extrusions, Forgings, Open immersion tanks
Defect ExamplesCracks, Laps, Seams
StandardsAECL, AMS 2644, ASME BPVC, ASTM E1417, Boeing BAC 5423 PSD 6-46 or 8-4, Boeing PS-21202
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