The procedure according to this standard is used to test the behaviour of greases in the presence of distilled respectively by ion-exchange deionized (fully desalted) water at temperatures of 40 degree or 80 degree under dynamic conditions.
DIN 51807-2:1990 history
1990DIN 51807-2:1990 Testing of lubricants; test on the behaviour of greases in the presence of water; dynamic test