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Liquid Penetrant Inspection

Zyglo® ZL-56 Water Washable Fluorescent Penetrant

Zyglo® ZL-56 fluoresces a bright greenish-yellow under ultraviolet radiation and is safe for use on most engineering and aerospace alloys including aluminum, steel, nickel and titanium. Use of an ultraviolet light source with a peak wavelength of 365 nanometers, such as the Magnaflux ZB-100F fan-cooled black light, is recommended.

Zyglo® ZL-56 penetrant meets OSHA requirements for Class III B liquids due to its high flash point and can be used in open dip tanks.

Specifications Compliance:

AMS 2644, ASME B & PV Code, Sec. V, MIL-STD-271, MIL-STD-2132, Boeing BAC 5423 PSD 6-46 or 8-4, General Electric P50YP107, Boeing PS-21202, ASTM E 165, AECL, ASTM E 1417

Part Number and Container Size:

  • 01-3267-40: 5 Gallon Pail
  • 01-3267-30: 20 Gallon Drum
  • 01-3267-45: 55 Gallon Drum

Applications: Zyglo® ZL-56 is typically used on smooth, nonporous, highly machined surfaces to find cracks, seams, and scratches on critical parts.

Classification: Type 1, Method A, Water Washable (Non-Water-Based) Penetrant, Level 4

Sensitivity Level: Level 4 - Ultra-High Sensitivity

ZL-56
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