Product Data Sheet

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 andreliability, 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 toprovide the highest reliability of any penetrant inspection method.
ZL-27A has a high flash point and provides long tank life when used inopen dip tanks, but this penetrant can also be applied in a variety of other ways, including electrostaticspray.
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.
BENEFITS
Improve indication detection••

Clear, bright indications are easier to detectdue to high UV and thermal stability – evenfor 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 processcontrol••

Prevents over-washing since ZL-27A
cannot be removed with water (unlesscombined with an emulsifier)PE penetrant system is less susceptible tohuman error since only surface penetrant isremoved in the final rinse stage

Revised: December 2020

Wide range of inspections••

Inspect a wide range of high-value
components without fear of corrosion orspecification non-conformance
Meets all major industry and NDTspecification requirements, including
Aerospace Prime and OEM specs, AMS
2644 and ISO 3452

Maximize operator comfort and safety•••

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

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Product Data SheetFEATURES• 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
SPECIFICATION COMPLIANCE• AECL• AMS 2644
• ASME BPVC
• ASTM E1417• ASTM E165
• Boeing BAC 5423 PSD 6-46 or 8-4• Boeing PS-21202• ISO 3452
• MIL-STD-2132• MIL-STD-271• NAVSEA T9074-AS-GIB-010/271• Pratt & Whitney PMC 4353
• QPL SAE AMS 2644
PROPERTIES
Flash Point> 200°F / 93°CDensity

0.93 g/cc / 7.72 lb/gal

Viscosity(at 100°F / 38°C)

9.65 cs

NPE-FreeYes

Revised: December 2020

APPLICATIONSDefect 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
USE RECOMMENDATIONSNDT Method

Penetrant Testing,Fluorescent

Type1Method(s)B/C/DSensitivity Level3, high sensitivity

Required Equipment

UV light source

Usage Temperature

40 to 125°F / 5 to 52°CStorage Temperature

50 to 86°F / 10 to 30°C

PACKAGING
1 gal / 3.78 L, case of 4
5 gal / 18.9 L pail		
20 gal / 75.7 L drum		
55 gal / 208 L drum		

01-3187-35
01-3187-40
01-3187-30
01-3187-45

HEALTH AND SAFETY
Review all relevant health and safety information
before using this product. For complete health andsafety information, refer to the product Safety Data
Sheet, which is available at www.magnaflux.com.

magnaflux.com