The induction period may be used as an indication of the oxidation and storage stability of middle distillate fuel.

Compared to some other oxidation and storage stability test methods, this method uses a small sample and gives a result in a short time period.

1.1 This laboratory test method covers a quantitative determination of the stability of middle distillate fuels such as diesel fuels and heating oils, with up to 100% biodiesel, under accelerated oxidation conditions, by an automatic instrument.

1.2 This test method is designed for products complying with Specification D 975 on Diesel Fuel, Grades No. 1D and 2D; Specification D 396 on Burner Fuel, Grades No. 1 and No. 2; Specification D 6751 on Biodiesel, B100, and Specification D 7467 on Diesel Fuel Oil, B6 to B20.

1.3 This test method measures the induction period, under specified conditions, which can be used as an indication of the oxidation and storage stability of middle distillate fuels.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 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.