Magnaflux ZL-37 Level 4 Post Emulsifiable Fluorescent Penetrant

USD $13.94USD $8,424.65

Cans Discontinued – Available While Supplies Last

Essential for critical component applications, ultra-high sensitivity ZL-37 post-emulsifiable penetrant is designed for detecting fine, tight discontinuities in safety-critical components, such as titanium turbine components, and in high-stress parts, such as investment castings.



This Type 1 penetrant is non-water-soluble so there is minimal risk of washing ZL-37 penetrant from a fine or shallow defect which makes this penetrant inspection the most reliable, dependable form of PT testing. ZL-37 has a high flash point and provides long tank life when used in open dip tanks, but this penetrant can also be applied in a variety of other ways, including electrostatic spray. ZL-37 can be removed with ZE-4E Method B lipophilic emulsifier or ZR-10E Method D hydrophilic emulsifier. ZL-37 is listed on the QPL SAE AMS 2644 Qualified Product List and is approved for use by Pratt & Whitney.


  • Improve indication detection in the most critical applications
  • Wide range of inspections
  • Maximize penetrant inspection process control
  • Maximize operator comfort and safety

Ideal For

  • Detecting fine to very-fine discontinuities
  • Precision components
  • Safety-critical components
  • Investment castings
  • High-stress parts
  • Smooth, machined surface finish
  • Non-porous surfaces

For more information, see manufacturer’s product sheet:  Product Sheet – Magnaflux ZL-37 Level 4 Post Emulsifiable Fluorescent Penetrant

Additional information

Weight N/A
Dimensions N/A

20 gal, Aerosol can, Aerosol can – case of 12, 5 gal, 55 gal


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