Standard(s): 

DIN 51367, DIN 51368, DIN 51385, IP 137

Product group(s): Oil

User group(s): Cooling Lubricant

Scope:

DIN 51 367 - DIN 51 385 (Acidification Method):
is a method for testing the stability of emulsifiable lubricants in mixture with hard water.

DIN 51 368 - IP 137 (Acidification Method):
are tests for the determination of the fractions of portions of water-mixed cooling lubricants separable by acidification. The difference of the methods lays in the shape of the required flasks.