1.1This test method2 covers the determination of the hydrolytic stability of petroleum or synthetic-based hydraulic fluids.

Note 1:Water-based or water-emulsion fluids can be evaluated by this test method, but they are run “as is.” Additional water is not added to the 100-g sample. In these cases, the person requesting the test needs to let the test operator know that water is present.

1.2The values stated in SI units are to be regarded as the standard. The English units given in parentheses are provided for information only.

1.3This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in 3.1, 6.1, 6.3, 6.9 and Annex A1.