ii
ii超純水 ii給水・蒸気・濃縮水 ii飲料水
iiプール用水・衛生管理水 ii冷却水 ii（産業）生活排水・放流水

Water

 www.awwa.org
 www.dvgw.de/wasser
 www.epa.gov
 www.iapws.org
 www.wef.org

American Water Works Association
Gesellschaft des Gas- und Wasserfachs, e.V. 
US Environmental Protection Agency 
International Association for the Properties of Water and Steam
Water Environmental Federation (USA) 

Power

 www.nus.com
 www.vgb.org
 www.ppchem.net
 www.epri.com

Scientic, Inc. NUS Information Services (USA) 
VGB PowerTech, e.V. (Germany) 
Power Plant Chemistry Journal (Germany) 
Electric Power Research Institute (USA)

Standards

 www.astm.org
 www.iso.org
 www.standardmethods.org

American Society for Testing and Materials
International Organization for Standardization
Standard Methods for the Examination of Water and Wastewater (USA)

Fieldbus

www.profibus.com

International PROFIBUS Organization