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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
3640ClosedResolution Required08/06/201509/18/2015MPMS Ch. 6.1A, 1st Ed., August 2015, COLM Ballot
3681ClosedPass08/30/201510/12/2015MPMS, Ch. 22.2, 2nd Ed., August 2015, COGFM Reballot
3921ClosedResolution Required08/07/201609/19/2016MPMS, Ch. 12.1.2, 2nd Ed, Aug 2016, COLM Ballot
4014ClosedResolution Required11/29/201601/10/2017API MPMS, Ch. 5.8, 2nd Ed., November 2011, Reaffirmation
4039ClosedResolution Required01/12/201702/24/2017API MPMS Ch. 6.1A, 1st Ed., January 2017, COLM Reballot
4063ClosedResolution Required02/02/201703/03/2017MPMS, TR2577, Feb 2017, Circulation
4055ClosedResolution Required01/26/201703/09/2017API MPMS Ch. 13.3, 2nd Ed., January 2017, COLM ballot
4068ClosedResolution Required02/12/201703/09/2017API MPMS TR2578, February 2017, COLM Circulation
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