Ardrox 9881 is a hydrophilic emulsifier for post-emulsifiable fluorescent penetrants, designed for aerospace and industrial applications. It contains biodegradable surfactants, activators, corrosion inhibitors, and is non-flammable. Compatible with Ardrox 981X and 985 series penetrants.

Compliant with AMS 2644 (ex MIL-I-25135), it is approved by Rolls-Royce (CSS232, OMat 621K), Pratt & Whitney (PMC 4355), SNECMA, SAFRAN, and accepted by GE, British Aerospace, CFM International.

Applicable via immersion, spray, rain or foam, it ensures effective penetrant removal at concentrations from 5% to 20%. Safe on common metals; AISI 304 stainless steel tanks are recommended.