FTM 5309 Copper Test Strip
Copper test strips used in FTM 5309 (Corrosiveness of Greases). The test determines the presence of corrosive compounds in grease at elevated temperatures. The copper test strip is 1/2" x 3" x 0.60" and is polished per FTM 5309.
Customized test strips for modified versions of this test method are available on request.