1.1 This test method covers the detection in acetone and methanol of the presence of impurities that reduce potassium permanganate. 1.2 For purposes of determining conformance of an observed or a calculated value using this test method to relevant specifications, test result(s) shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E 29. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 For specific hazard information and guidance, consult the supplier's Material Safety Data Sheet. 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.