1.1 This test method covers a procedure for determining the degree of biodegradability of lubricants or their components in an aerobic aqueous medium on exposure to an inoculum under controlled laboratory conditions. This test method is an ulti-mate biodegradation test that measures oxygen demand in a closed respirometer.
1.2 This test method is suitable for evaluating the biodeg-radation of volatile as well as nonvolatile lubricants or lubri-cant components.
