This fluorescent penetrant is designed for detecting small defects in materials, remaining effective even when exposed to water. It fluoresces bright greenish-yellow under UV light and meets various industry specifications. With a high flash point, it is suitable for use in open dip tanks, complying with OSHA Class III B standards.
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Overview
Zyglo ZL-37 is designed to be impervious to water to protect it from overwashing and to allow more penetrant to remain in discontinuities for improved detection of small defects. It and other post emulsifiable penetrants require the application of a lipophilic or hydrophilic emulsifier to render them washable with water. Zyglo ZL-37 fluoresces bright greenish-yellow under an ultraviolet light source with a peak wavelength of 365 nm. It possesses a high flash point and meets OSHA requirements for Class III B liquids allowing it to be used in open dip tanks. Specification Compliance: AMS 2644, AECL, ASME B & PV Code Sec. V, ASTM E1417, MIL-STD-2132, ASTM E165, MIL-STD-271, Boeing BAC 5423 PSD 6-46 or 8-4, AECL, Boeing PS 21202.
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