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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-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.

Benefits

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 minimized; emulsifiers only remove surface penetrant without the risk of over-washing

Maximize penetrant inspection process control

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

Wide range of inspections

Features

  • Level 4 ultra-high sensitivity
  • Post emulsifiable
  • Bright, high-contrast indications
  • Resists over-washing or over-removal
  • High flash point
  • Wide range of application methods
  • Low odor
  • Very low toxicity
  • Alloy compatibility
  • Very high thermal resistance
  • Very high UV stability
  • High dye content
  • QPL SAE AMS 2644 Qualified Product List
  • Approved for use by Pratt & Whitney

 

Ordering Information

Aerosol can (case of 12)01-3188-78

5 gal / 18.9 L01-3188-40

20 gal / 75.7 L drum01-3188-30

55 gal / 208 L drum01-3188-45

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

StandardsAECL, AMS 2644, ASME BPVC, ASTM E1417, Boeing BAC 5423 PSD 6-46 or 8-4, Boeing PS-21202, ISO 3452, NAVSEA T9074-AS-GIB-010/271, Pratt & Whitney PMC 4354, QPL SAE AMS 2644

Resources

Related Products

  • ZP-4B

    ZP-4B

    Dry powder developer for Form a penetrant testing, QPL SAE AMS 2644 and Pratt & Whitney approved

  • ZP-5B

    ZP-5B

    Water suspendible developer for Form c penetrant testing, QPL SAE AMS 2644

  • ZP-9F

    ZP-9F

    Solvent-based developer for Type 1 Form d or Type 2 Form e penetrant testing, QPL SAE AMS 2644

  • SKC-S

    SKC-S

    NDT cleaner and remover for pre-cleaning before non-destructive testing and for removing excess surface penetrant

  • ST700

    ST700

    Inspection-grade stationary flood LED UV-A lamp gives overhead black light for fluorescent NDT inspections

  • EV6000

    EV6000

    Portable, handheld LED UV lamp for black light inspection during fluorescent PT or MT testing

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