ASSE 6000 Credentialing Agencies
- (NITC) National Inspection Testing Certification
- (MGA) Medical Gas Accreditation
- (MGTC) Medical Gas Testing and Certification
- (MGTI) Medical Gas Training Institute
Government
Organizations
- (AHA) American Hospital Association
- (AIA) American Institute of Architects
- (ASHE) American Society for Healthcare Engineering
- (ASPE) American Society of Plumbing Engineers
- (CDA) Copper Development Association
- (CGA) Compressed Gas Association
Standards