ASTM D287-22
Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer/Method)

Standard No.

ASTM D287-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D287-22

Scope

1.1 This test method covers the determination by means of a glass hydrometer in conjunction with a series of calculations of the API gravity of crude petroleum and petroleum products normally handled as liquids and having a Reid vapor pressure (Test Method D323) of 14.696 psi (101.325 kPa) or less. Values are determined at existing temperatures and corrected to values at 60 °F (15.56 °C), or converted to values at 60 °F, by means of Adjunct to D1250 Standard Guide for the Use of the Joint API and ASTM Adjunct for Temperature and Pressure Volume Correction Factors for Generalized Crude Oils, Refined Products, and Lubricating Oils (API MPMS Chapter 11.1). These tables are not applicable to nonhydrocarbons or essentially pure hydrocarbons such as the aromatics. 1.2 The initial values obtained are uncorrected hydrometer readings and not density measurements. Values are measured on a hydrometer at either the reference temperature or at another convenient temperature, and readings are corrected for the meniscus effect, the thermal glass expansion effect, alternate calibration temperature effects and to the reference temperature by means of the petroleum measurement tables; values obtained at other than the reference temperature being hydrometer readings and not density measurements. 1.3 The initial hydrometer readings determined shall be recorded before performing any calculations. Then the calculations required in Section 9 shall be performed and documented before using the final result in a subsequent calculation procedure (measurement ticket calculation, meter factor calculation, or base prover volume determination). 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific warning statement, see 8.5. 1.6 This 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.

ASTM D287-22 Referenced Document

• ASTM D1250 Standard Guide for Petroleum Measurement Tables
• ASTM D1298 Standard Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method
• ASTM D323 Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method)
• ASTM D6822 Standard Test Method for Density, Relative Density, and API Gravity of Crude Petroleum and Liquid Petroleum Products by Thermohydrometer Method (Standard + Redline PDF Bundle)
• ASTM D7962 Standard Practice for Determination of Minimum Immersion Depth and Assessment of Temperature Sensor Measurement Drift
• ASTM D8164 Standard Guide for Digital Contact Thermometers for Petroleum Products, Liquid Fuels, and Lubricant Testing
• ASTM E1 Standard Specification for ASTM Thermometers
• ASTM E100 Standard Specification for ASTM Hydrometers
• ASTM E126 Standard Test Method for Inspection and Verification of Hydrometers
• ASTM E2251 Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids
• ASTM E2877 Standard Guide for Digital Contact Thermometers*， 2024-04-22 Update
• ASTM E344 Terminology Relating to Thermometry and Hydrometry*， 2023-12-01 Update
• ASTM E77 Standard Test Method for Inspection and Verification of Thermometers

ASTM D287-22 history

• 2022 ASTM D287-22 Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer/Method)
• 0000 ASTM D287-19
• 2019 ASTM D287-12b(2019) Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
• 2012 ASTM D287-12b Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
• 2012 ASTM D287-12a Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
• 2012 ASTM D287-12 Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
• 1992 ASTM D287-92(2006) Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
• 2000 ASTM D287-92(2000)e1 Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)
• 1992 ASTM D287-92 Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)