API MPMS Chapter 9.1
Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method, Third Edition, December 2012
API MPMS Chapter 9.2
Standard Test Method for Density or Relative Density of Light Hydrocarbons by Pressure Hydrometer, Third Edition, December 2012
API MPMS Chapter 9.3
Standard Test Method for Density, Relative Density, and API Gravity of Crude Petroleum and Liquid Petroleum Products by Thermohydrometer Method, Third Edition, December 2012
API MPMS Chapter 20.3
Measurement of Multiphase Flow, First Edition, January 2013
ANSI/API MPMS Chapter 21.1
Flow Measurement Using Electronic Metering Systems—Electronic Gas Measurement, Second Edition, February 2013