Nationally Recognized Testing Laboratories

A Nationally Recognized Testing Laboratory (NRTL) is a United States Occupational Safety and Health Administration (OSHA) designation given to testing facilities that provide product safety testing and certification services to manufacturers. The testing and certification are done to U.S. consensus-based product safety test standards. These test standards are not developed or issued by OSHA, but are issued by U.S. standards organizations, such as the American National Standards Institute (ANSI). The range of products covered is limited to those items for which OSHA safety standards require "certification" by an NRTL.

OSHA, an agency of the Department of Labor, publishes a list of Nationally Recognized Testing Laboratories.

Organizations currently recognized by OSHA as NRTLs:

• Canadian Standards Association (CSA) (also known as CSA International)
• Communication Certification Laboratory, Inc. (CCL)
• Curtis-Straus LLC (CSL)
• FM Approvals LLC (FM) (formerly Factory Mutual Research Corporation)
• Intertek Testing Services NA, Inc. (ITSNA) (formerly ETL)
• MET Laboratories, Inc. (MET)
• NSF International (NSF)
• QAI Laboratories, LTD (QAI)
• QPS Evaluation Services, Inc. (QPS)
• SGS U.S. Testing Company, Inc. (SGSUS) (formerly UST-CA)
• Southwest Research Institute (SWRI)
• TUV Rheinland PTL, LLC (TÜVPTL)
• TUV SUD America (TÜVAM)
• TUV SUD Product Services GmbH (TÜVPSG)
• TUV Rheinland of North America (TÜV)
• Underwriters Laboratories Inc. (UL)