This test method covers the determination of the acidic fluorides of sulfur hexafluoride (SF₆).

Formerly under the jurisdiction of Committee D27 on Electrical Insulating Liquids and Gases and the direct responsibility of Subcommittee D27.06 on Chemical Test, this test method was withdrawn in January 2011 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

Acidic fluorides are undesirable in SF₆ used as an electrical insulating gas in that they may contribute to corrosion or constitute dielectric hazard.

This test method is valid for both new and used SF₆. In used SF₆, it will only measure those active species which are hydrolyzable.

1.1 This test method covers the determination of the acidic fluorides of sulfur hexafluoride (SF₆).

1.2 This 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.