- API – American Petroleum Institute
- ASA – Acoustical Society of America
- ASHRAE – American Society of Heating, Refrigerating & Air Conditioning Engineers
- ASME – American Society of Mechanical Engineers
- ASTM – American Society of Testing & Materials
- AWWA – American Water Works Association
- BS – British Standards Institution
- DIN – Deutsches Institut für Normung
- IEEE – Institute of Electrical & Electronics Engineers
- IET – Institution of Engineering & Technology
- IP – The Institute of Petroleum
- ISO – International Organization for Standardization
- NFPA – National Fire Protection Association
- SAE – Society of Automotive Engineers
- UNI Ente Nazionale Italiano di Unificazione
- VDE – VERLAG Conference Proceedings