Skip to main content
Go Search

COLM: Liquid Measurement

My Committees
My Rosters

 API Contact

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
3574ClosedResolution Required04/28/201506/10/2015MPMS, Ch. 6.4, 2nd Ed., Jan 2007, Withdraw
3588ClosedResolution Required05/21/201507/06/2015MPMS Ch. 12.2, 2nd Edition, March 2015, COLM Ballot
3633ClosedResolution Required07/27/201509/08/2015MPMS Ch. 4.5, Annex B, 3rd Edition, July 2015, COLM Ballot
3640ClosedResolution Required08/06/201509/18/2015MPMS Ch. 6.1A, 1st Ed., August 2015, COLM Ballot
3681ClosedResolution Required08/30/201510/12/2015MPMS, Ch. 22.2, 2nd Ed., August 2015, COGFM Reballot
3820ClosedResolution Required03/06/201604/18/2016MPMS Ch. 5.1, 4th Ed., Sept 2005, Reaffirmation
3848ClosedIn Progress04/03/201605/16/2016MPMS, Ch. 3.4, 1st Ed., April 1995, Reaffirmation
3881OpenIn Progress05/26/201607/08/2016MPMS, Ch. 6.2, 3rd Ed., February 2004, Reaffirmation
Privacy Policy | Terms and Conditions | Legal Notices | Copyright 2007 - API. All rights reserved