ZL-37 (5 gal) 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

• 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

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