Links to Standards and Regulatory Agencies:

ACGIH - American Conference of Governmental Industrial Hygienists
AIA - American Institute of Architects
AIHA - American Industrial Hygiene Association
ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers
ASPE - The American Society of Plumbing Engineers
ASSE - American Society of Safety Engineers
CAP - College of American Pathologists
CDC - Centers for Disease Control and Prevention
CGA - Compressed Gas Association
JCAHO - Joint Commission on Accreditation of Healthcare Organizations
MGPHO - Medical Gas Professional Healthcare Organization
NITC - National Inspection Testing Certification
NFPA - National Fire Protection Association
NIOSH - The National Institute for Occupational Safety and Health
OSHA - Occupational Safety & Health Administration
P.I.P.E. - Piping Industry Progress and Education Fund - Medical Gas Installer Certification Program
USP - U.S. Pharmacopeia