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ZL-37

Level 4 Post Emulsifiable Fluorescent Penetrant

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-4B Method B lipophilic emulsifier or ZR-10C Method D hydrophilic emulsifier.

Improve indication detection in the most critical applications

  • Creates the clearest, brightest indications for even the finest flaws due to very strong UV and thermal stability.
  • Highest fluorescent brightness of any Level 4 penetrant for high-contrast indications that are easy for inspectors to see – even when the indications are very small.
  • Indications stand out more since background fluorescence is minimised; emulsifiers only remove surface penetrant without the risk of over-washing.

Maximise penetrant inspection process control

  • Prevents over-washing since ZL-37 cannot be removed with water (unless combined with an emulsifier).
  • PE penetrant system is less susceptible to human error since only surface penetrant is removed in the final rinse stage.

Wide range of inspections

  • Inspect a wide range of high-value components without fear of corrosion or specification non-conformance
  • Meets all major industry and NDT specification requirements, including Aerospace Prime and OEM specs, AMS 2644 and ISO 3452 ​

Maximise operator comfort and safety

  • Promotes better inspection quality by providing the operator with a more comfortable work environment
  • Reduces discomfort from strong odours
  • Exceeds all EHS requirements

Ordering Information

25 litres066C020

200 litres066C019

Product Properties

NDT TypeFluorescent Penetrant Testing

Penetrant TypeType 1

Fluorescent Penetrant SensitivityLevel 4 - Ultra-High Sensitivity

Penetrant MethodsMethod B, Method C

Removal TypePost Emulsifiable

Required EquipmentUV light source

Applications

Ideal ApplicationAluminum, Detecting fine to very-fine discontinuities, Electrostatic spray, Finding wide, shallow flaws, High-stress parts, Immersion dip tank, Investment castings, Non-porous surfaces, Precision components, Safety-critical components, Smooth, machined surface finish, Titanium, Turbine engine blades, disks, etc.

Defect ExamplesFinished surface cracks, Porosity, Scratches, Seams

Compliance

StandardsAMS 2644, ASME BPVC, ASTM E1417/E1417M, ASTM E165/E165M-18, MIL-STD-2132D, Pratt & Whitney PMC 4354, Rolls Royce RRP 58003 (CSS 232), SAFRAN Pr 5000/In 5000

Resources

Related Products

  • ZL-2C

    ZL-2C

    ZL-2C Level 2 post-emulsifiable fluorescent penetrant for Method B/C/D liquid penetrant testing

  • ZL-27A

    ZL-27A

    ZL-27A Level 3 post-emulsifiable fluorescent penetrant for Method B/C/D liquid penetrant testing

  • EV6000

    EV6000

    EV6000 portable, hand-held LED UV lamp for fluorescent PT and MT

  • ST700

    ST700

    ST700 LED UV-A flood lamp for black light inspection

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