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Product Sheet

Safety Data, Liquid

Safety Data, Aerosol

ZL-27A
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.
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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.
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ZL-27A is listed on the QPL SAE AMS 2644 Qualified Product List and is approved for use by Pratt & Whitney.

​1 gal (case of 4) - Item #:  01-3187-35
5 gal/18.9 L pail - Item #:  01-3187-40
20 gal/75.7 L drum - Item #: 01-3187-30
55 gal/208 L drum - Item #:  01-3187-45

Benefits

​Improve indication detection

• Clear, bright indications are easier to detect due to high UV and thermal stability – even for small flaws and discontinuities
• 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-27A 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
  
  

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
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Maximize operator comfort and safety

• Promotes better inspection quality by providing the operator with a more comfortable work environment
• Reduces discomfort from strong odors
• Exceeds all EHS requirements

Features

• Level 3 high sensitivity
• Post emulsifiable
• Bright indications
• Resists over-washing or over-removal
• High flash point
• Wide range of application methods
• Low odor
• Very low toxicity
• Alloy compatibility
• High thermal resistance
• High UV stability
• QPL SAE AMS 2644 Qualified Product List
• Approved for use by Pratt & Whitney

Specifications

• AECL
• AMS 2644
• ASME
• ASTM E1417
• ASTM E165
• MIL-STD-2132
• MIL-STD-271
• NAVSEA T9074-AS-GIB-010/271
• Pratt & Whitney PMC 4352
• QPL SAE AMS 2644

Applications

Defect location:  Open to surface
Ideal for:  

• Detecting fine discontinuities
• Critical components
• Precision castings
• Precision forgings
• Machined components
• Immersion dip tank
• Electrostatic spray

Defect examples:

• Fine cracks
• Seams
• Porosity

Utilization

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