1.1 This test method covers the calibration and use of automatic analyzers for determining the antiknock quality of motor gasolines [black-box]. Octane numbers from analyzers operated in accordance with this test method are equivalent to ASTM research or motor method octane numbers.

1.2 In this test method, inch-pound units are the preferred system of measurement.

1.3 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.