Zyglo® ZE-4B is a lipophilic emulsifier. It can be used in open tanks due to its low volatility and high flash point. ZE-4B is non-corrosive.
AMS 2644, MIL-STD-271, Boeing BAC 5423 PSD 6-46 or 8-4, MIL-STD-2132, ASTM E 165, ASME B & PV Code, Sec. V, ASTM E 1417, Boeing P.S. 21202, AECL
ZE-4B is used as a Method B lipophilic emulsifier for Magnaflux Post Emulsifiable Penetrants.
Classification: Method B - Lipophilic Emulsifier