The method is not applicable to those very soft greases which are found to pass bodily through the gauze into cup during the test.

A cylindrical column of grease resting on a metal gauze cone is subjected to a fixed pressure in excess of the hydrostatic pressure of the grease. The quantity of oil separated through the gauze after standing for 42 h or 168 h at 40 °C is taken as a measure of the stability of the grease towards oil separation during storage.

In the last years some users also want to test some greases at high temperatures up to 120 °C. Some aggressive geases tend to react with copper in the brass composition.

Therefore a new version of the grease cup with the cone of woven wire and the load weight are made of stainless steel.

Oil Separation Test Assembly

More details are mentioned in the "Order Number" section