ASTM D8003-15a(2021)

5.1This test method determines methane (nC₁) to hexane (nC₆), cut point carbon fraction intervals to nC₂₄ and recovery (nC_{5.2Equation of state calculations can be applied to variables provided by this method to allow for additional sample characterization.}

1.1This test method covers the determination of light hydrocarbons and cut point intervals by gas chromatography in live crude oils and condensates with VPCR₄ (see Note 1) up to 500kPa at 37.8 C.

1.2Methane (C₁) to hexane (nC₆) and benzene are speciated and quantitated. Samples containing mass fractions of up to 0.5% methane, 2.0% ethane, 10% propane, or 15% isobutane may be analyzed. A mass fraction with a lower limit of 0.001% exists for these compounds.

1.3This test method may be used for the determination of cut point carbon fraction intervals (see 3.1.1) of live crude oils and condensates from initial boiling point (IBP) to 391 C (nC₂₄). The nC₂₄ plus fraction is reported.

1.4Dead oils or condensates sampled in accordance with 12.1 may also be analyzed.

1.5The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.