ER-85 is used in the inspection penetrant process to remove excess surface penetrant where the Method B, the lipophilic emulsifier method, is required. There is no “pre-wash” with this method, and the emulsifier is used full strength.
Penetrant System Category
Removers & Emulsifiers Lithophilic Emulsifiers (Method B)
QPL SAE AMS 2644 Method Method B
ASTM E1417, E165