The Committee on Petroleum Measurement, COPM, is responsible for ~180 standards used worldwide for custody transfer operations. The technical subcommittees that report to the COPM are:
- Committee on Liquid Measurement
- Committee on Gas Fluid Measurement
- Committee on Production Measurement & Allocation
- Committee on Measurement Quality
- Committee on Measurement Accountability
- Committee on Evaporative Loss Estimation
- Committee on Measurement Education & Training