Search QuantityWare

How Standards Happen

Measurement standards organizations exist in all nations around the globe – either organized by governments or having their roots in the private sector. Standard organizations have working groups that consist of industry & public experts. These working groups issue and constantly update/revise standard documents via a defined revision and balloting process – typically every 5 to 10 years.

Measurement Standards at QuantityWare

QuantityWare develops implementations of petroleum and natural gas measurement standards delivered within the BCS solution. QuantityWare purchases the relevant standards from official publishing sources.

Currently our internal standards library consists of over 160 documents. QuantityWare respects the copyright of all standard institutes and does not distribute any of these documents, neither in printed nor electronic form.

We strongly recommend that a customer purchases its own licensed copies of the relevant standard documents to cross check our implementations. See QuantityWare Note 000008 in the Knowledge Base for purchasing information.

Supported Standards

Bulk Calculations Petroleum BCP 3.0 - Supported Standards Manual

A complete definition of all measurement standards supported by BCP. E.g. calculation models, CTPL, mass / weight & UoM conversion factor standards and BCP Installation Test details. (28 pages)

Bulk Calculations Gas BCG 3.0 - Supported Standards Manual

A complete definition of all standards supported by BCG. E.g., calculation models, calculation of densities & heating values from composition, compression factor standards, UoM conversion factors and physical property range limits, as well as BCG Installation Test details. (24 pages)

Measurement Standards Organizations

American Petroleum Institute

The American Petroleum Institute, providing state-of-the-art measurement standards for the petroleum industry.

ASTM International

ASTM International, originally known as the American Society for Testing and Materials (ASTM), develops high-quality, market-relevant international standards used around the globe.

GPA Midstream

The Gas Processors Association, meeting the needs of the midstream natural gas processing industry.

American Gas Association

The American Gas Association, providing state-of-the art measurement standards for the natural gas industry.

International Organization for Standardization

The International Organization for Standardization – Why standards matter. Which organization represents my country at the ISO? This link will help you to get started in the standards jungle.

National Institute of Standards and Technology

The National Institute of Standards and Technology – Working with Industry to foster innovation, trade, security and jobs – provides the state-of-the art NIST special Publication 811 – Guide for the Use of the International System of Units (SI) – one important basis for SAP quantity and unit conversion factor definition in your SAP system – there is also API MPMS Chapter 15, 11.5 and historical versions.

Bureau International des Poids et Mesures

The Bureau International des Poids et Mesures – where international standardization of units started in 1875.


GOST (Russia) – The Federal Agency on Technical Regulating and Metrology is included in the system of federal executive bodies of the Russian Federation and is under jurisdiction of the Ministry of Industry and Energy of the Russian Federation.

European Committee for Standardization

The European Committee for Standardization (CEN) is a business facilitator in Europe, removing trade barriers for European industry and consumers. Its mission is to foster the European economy in global trading, the welfare of European citizens and the environment. Through its services it provides a platform for the development of European Standards and other technical specifications.