Level 3 Post Emulsifiable Fluorescent Penetrant
Post-emulsifiable ZL-27A is a Level 3, high-sensitivity Type 1 penetrant designed for inspections which require maximum process control and reliability, such as safety-critical aerospace testing.
Since ZL-27A is not water soluble, there is minimal risk of this penetrant being removed from a fine or shallow defect through over-washing to provide the highest reliability of any penetrant inspection method.
ZL-27A 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.
To remove surface ZL-27A penetrant before developer application, use ZE-4E Method B lipophilic emulsifier or ZR-10E Method D hydrophilic emulsifier can be used.
ZL-27A is listed on the QPL SAE AMS 2644 Qualified Product List and is approved for use by Pratt & Whitney.
Container Size & Part Number
Aerosol can, case of 12 01-3187-78
5 gal / 18.9 L pail 01-3187-40
20 gal / 75.7 L drum 01-3187-30
55 gal / 208 L drum 01-3187-45
Defect location: open to surface
- Detecting fine discontinuities
- Critical components
- Precision castings
- Precision forgings
- Machined components
- Immersion dip tank
- Electrostatic spray
- Fine cracks
NDT Method: Fluorescent Penetrant Testing
Type: Type 1
Methods: Method B, Method C or Method D
Sensitivity Level: Level 3, high sensitivity
Required Equipment: UV light source, like the EV6000
Temperature Range: 40 to 125°F / 4 to 52°C