MPMS Chapter 1: General Information

The Chapter 1 Terms and Definitions online database provides definitions and terms used throughout the API Manual of Petroleum Measurement Standards (MPMS). The database is searchable by term, definition, chapter, subcommittee, and other filters. It is used by general users for searching terms and definitions within the Chapters of the MPMS. It is also used by Committee on Petroleum Measurement Subcommittee and Work Group members for maintenance of terms and standard development.

General users may print the results of their search and COPM members may print certain requested reports.

Chapter 1 Terms and Definitions is an evergreen document with the permanent goal to strive for one definition for each term and that is technically correct, concise, universal, logical, and stands on its own.

Chapter 1 is updated when there are applicable changes to the MPMS Standards. Questions on the Database contents may be submitted using the ‘Submit Question’ page.