Liquid penetrant 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.