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A medium sensitivity penetrant (Level 2), ZL-2C fluorescent post-emulsifiable penetrant is designed to be removed from the part surface by emulsifiers or solvent. With a UV-A light source, indications will appear as a bright green-yellow fluorescence. ZL-2C has a high flash point, and is designed to be used in open dip tanks.
ZL-2C 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
Fluorescent Penetrant SensitivityLevel 2 - Medium Sensitivity
Penetrant MethodsMethod B, Method C
Removal TypePost Emulsifiable
Required EquipmentUV light source
Ideal ApplicationCastings, Extrusions, Forgings, Rough surface finish, Welds
Defect ExamplesCracks, Delamination, Laps, Porosity, Seams
StandardsAECL, AMS 2644, ASME, ASTM E1417, NAVSEA T9074-AS-GIB-010/271, Pratt & Whitney PMC 4352, QPL SAE AMS 2644
Dry powder developer for Form a penetrant testing and QPL SAE AMS 2644 approved.
Water suspendible developer for Form c penetrant testing, QPL SAE AMS 2644
Solvent-based developer for Type 1 Form d or Type 2 Form e penetrant testing, QPL SAE AMS 2644
NDT cleaner and remover for pre-cleaning before non-destructive testing and for removing excess surface penetrant
Hydrophilic emulsifier for Method D penetrant testing, QPL SAE AMS 2644 and Pratt & Whitney approved
Lipophilic emulsifier for Method B liquid 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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