BS ISO 22285:2018,Petroleum products and lubricants — Determination of oil separation from grease — Pressure filtration method.
BS ISO 22285:2018 specifies a method for measuring the quantity of oil separated from lubricating grease in the test conditions.
Normative references
ISO 2137, Petroleum products and lubricants-Determination of cone penetration of lubricating greasesand petrolatum;
ISO 2194, Industrial screens – Woven wire cloth, perforated plate and electroformed sheet- Designationand nominal sizes of openings;
ISO 12924, Lubricants, industrial oils and related products(Class L)-Family X (Greases)-Specification;
ASTM D4057, Standard Practice for Manual Sampling of Petroleum and Petroleum Products;
A sample of grease is placed in a metallic cylinder closed by a cone made from a metallic gauze.
For greases of NLGI grade 2 and higher, a pressure is applied on the levelled surface by means of weight.
For greases of NLGI grades 0 and 1, the test can be performed without applying pressure
For very soft greases,the test is performed without applying pressure.
Significance and use
The results of the present method are representative of the oil separation phenomena in grease containers at storage.
The present method does not take into account the tendency of the grease to separate oil in the conditions of service.
BS ISO 22285:2018 pdf can be downloaded on www.freestandardsdownload.com