A Method B lipophilic emulsifier, ZE-4B 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, Level 3 ZL-27A or Level 4 ZL-37, benefits include low volatility and a high flash point so ZE-4B can be used in open immersion tanks.
•High flash point
•Fast acting for quick processing times
•Supplied ready to use"
•Safe to use on all aerospace alloys, e.g. aluminium, steel, nickel, titanium
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
StandardsAMS 2644, ASME BPVC, ASTM E1417/E1417M, ASTM E165/E165M-18, MIL-STD-2132D
• ASME BPVC-V
• ASTM E165/E165M-18
• ASTM E1417/E1417M
Defect location: open to surface
• Use in open immersion tanks
A blend of emulsifying agents and oils.
Form and colour Pink/red liquid
Flash point > 93°C
Density 0.93 g/cm3
Viscosity at 38°C 25 mm2/s
Sulphur content < 1,000 ppm
Chloride content < 1,000 ppm
Like all Magnaflux materials, ZE-4B is closely controlled to ensure batch-to-batch consistency, optimum process control and inspection reliability.