Magnaflux
Magnaflux Zyglo ZL-37 Penetrant - Level 4
Magnaflux Zyglo ZL-37 Penetrant - Level 4
SKU: SKU:01-3188-40
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Magnaflux ZL-37 Level 4 Post Emulsifiable Fluorescent Penetrant
Designed for critical component applications, ZL-37 is an ultra-high sensitivity penetrant that excels in detecting fine, tight discontinuities in safety-critical components, including titanium turbine parts and high-stress investment castings. This Type 1 penetrant is non-water-soluble, minimizing the risk of washing away the penetrant from defects, ensuring reliable and dependable penetrant testing.
With a high flash point and long tank life when used in open dip tanks, ZL-37 can also be applied via electrostatic spray. For removal, it is compatible with ZE-4E Method B lipophilic emulsifier or ZR-10E Method D hydrophilic emulsifier.
Benefits
- Enhance detection: Achieve the clearest, brightest indications for even the smallest flaws, thanks to superior UV and thermal stability.
- Maximize inspection control: Prevent over-washing since ZL-37 cannot be removed with water alone, reducing human error during the inspection process.
- Versatile applications: Suitable for inspecting a variety of high-value components without concerns of corrosion or specification non-conformance, meeting major industry standards.
- Operator comfort and safety: Provides a more pleasant working environment by reducing strong odors and exceeding EHS requirements.
Features
- Level 4 ultra-high sensitivity
- Post emulsifiable with bright, high-contrast indications
- Resistant to over-washing
- Low odor and very low toxicity
- High thermal and UV stability
- Alloy compatibility
- QPL SAE AMS 2644 Qualified Product List
- Approved for use by Pratt & Whitney
Specifications
- Meets AMS 2644, ASTM E1417, ISO 3452, and other NDT specifications
Applications
Defect location: Open to surface
Ideal for:
- Detecting fine to very-fine discontinuities in precision and safety-critical components
- High-stress parts and investment castings
- Turbine engine blades and disks
Use Recommendations
NDT Method: Fluorescent Penetrant Testing
Sensitivity Level: Level 4
Temperature Range: 40 to 125°F / 4 to 52°C
Required Equipment: UV light source, such as the EV6000




