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COLM: Liquid Measurement

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Paula Watkins
p: 202.682.8197


There are currently no upcoming events.

 Committee Scope

The Subcommittee on Liquid Measurement (COLM) develops, approves and maintains standards dealing with the measurement of flowing hydrocarbon liquids, including:

  • Tank Calibration, MPMS Chapter 2
  • Tank Gauging, MPMS Chapter 3
  • Proving Systems, MPMS Chapter 4
  • Metering, MPMS Chapter 5
  • Metering Assemblies, MPMS Chapter 6
  • Calculation of Petroleum Quantities, MPMS Chapter 12
  • Statistical Aspects of Measuring and Sampling, MPMS Chapter 13 (Joint with
  • Measurement by Weight, MPMS Chapter 16
  • Crude by Truck, MPMS Chapter 18
  • Flow Measurement—Electronic Liquid Measurement, MPMS Chapter 21.2
  • Testing Protocols—MPMS Chapter 22 (Joint with COGFM)

For a complete listing of active COLM subordinate groups, click here. To access the sites themselves, you MUST be logged in.

COLM supports the API Downstream Department's Weight's and Measures Subcommittee.



  Forms & Reference Documents
  COPM Links

 Meeting Materials



 Ballot IDStatusResultsOpensClosesDescription
Committee ID : 296COLM: Committee on Liquid Measurement
3588ClosedResolution Required05/21/201507/06/2015MPMS Ch. 12.2, 2nd Edition, March 2015, COLM Ballot
4039ClosedResolution Required01/12/201702/24/2017API MPMS Ch. 6.1A, 1st Ed., January 2017, COLM Reballot
4135ClosedIn Progress06/01/201707/14/2017API MPMS, Ch. 6.6, 2nd Ed., May 1991, Reaffirmation
4142ClosedIn Progress06/12/201707/25/2017API MPMS Ch. 3.1B, 3rd Ed, June 2017, COLM Ballot
4146ClosedPass06/19/201707/31/2017API MPMS Ch. 2.2A, 1st Ed., Feb 1995, Reaffirmation
4184ClosedIn Progress07/10/201708/21/2017API MPMS Ch. 2.8A, 1st Ed, March 1991, Reaffirmation
4224ClosedIn Progress08/06/201709/18/2017API MPMS, Ch. 16.2, 1st Ed., November 1994, Reaffirmation
4237ClosedResolution Required08/17/201709/29/2017API MPMS Ch. 13.2, 2nd Ed, August 2017, COLM Ballot
4253ClosedIn Progress08/31/201710/13/2017API MPMS Std 2554, 2nd Ed, September 2017, COLM Ballot
4295OpenIn Progress10/26/201711/30/2017API MPMS Ch. 6.1, 2nd Ed., May 1991, Reaffirmation
4303OpenIn Progress11/16/201712/29/2017API MPMS Ch. 6.5, 2nd Ed., May 1991, Reaffirmation
4304OpenIn Progress11/19/201701/05/2018API MPMS Ch. 12.1.1, November 2017, Addenda
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