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<<< Nationally Recognized Testing Laboratorys (NRTL) Printing Instructions Directorate of Science, Technology and Medicine Nationally Recognized Testing Laboratorys (NRTL) Typical Registered Certification Marks1 NRTLs use the following marks to certify products for purposes of OSHA product-approval requirements. However, the presence of the mark on a product does not necessarily mean that it meets OSHA requirements, since NRTLs sometimes use these same or similar marks for non-OSHA purposes. OSHA accepts only those products that contain the NRTL's mark and that the NRTL has certified within its scope of recognition, which includes the test standards and testing sites that OSHA has recognized for the NRTL. See the OSHA web page for information on each NRTL's scope of recognition, or contact OSHA or the NRTL for additional information. Applied Research Laboratories, Inc. (ARL) (recognition terminated effective 1/28/08) The abbreviation "NRTL" must appear below the ARL mark. Canadian Standards Association (CSA)     Marks above used for products meeting only U.S. standards Marks above used for products meeting both U.S. and Canadian standards       Mark above used for gas-fueled products meeting U.S. standards2   Canadian Standards Association (CSA)(mark formerly used by the American Gas Association (AGA), exclusively licensed to CSA until June 30, 2001)   Communication Certification Laboratory, Inc. (CCL)   Curtis-Straus LLC (CSL) Marks below used for products meeting only U.S. standards (see note) Mark below used for products meeting both U.S. and Canadian standards (see note)   Original mark (use allowed until May 1, 2010)   Electrical Reliability Services, Inc. (ERS) (also known as eti Conformity Services and formerly Electro-Test, Inc. (ETI))   FM Global Technologies LLC (FM) (also known as FM Approvals and formerly Factory Mutual Research Corporation) Mark below used for products meeting only U.S. standards Mark below used for products meeting both U.S. and Canadian standards   Intertek Testing Services NA, Inc. (ITSNA) (formerly ETL Testing Laboratories, Inc.) Marks below used for products meeting only U.S. standards Marks below used for products meeting both U.S. and Canadian standards             (Note: In 2004, Entela, Inc., was acquired by the parent of ITSNA.)   Mark above used for products meeting only U.S. standards Mark above used for products meeting both U.S. and Canadian standards MET Laboratories, Inc. (MET)       Mark above used for products meeting only U.S. standards Commenced use - January 2006) Marks above used for products meeting both U.S and Canadian standards (Commenced use - January 2006)         Mark above used for products meeting both U.S. and Canadian standards (original MET mark) NSF International (NSF) Mark below used for products meeting only U.S. standards Use to expire 12/31/2012 Mark below used for products meeting both U.S. and Canadian standards Use to expire 12/31/2012     Mark below used for products meeting only U.S. standards Mark below used for products meeting both U.S. and Canadian standards   National Technical Systems, Inc. (NTS)   SGS U. S. Testing Company, Inc. (SGSUS) (formerly U.S. Testing Company, Inc.)   Southwest Research Institute (SWRI)   TUV America, Inc. (TUVAM)   Use to commence in early 2008 (see note)   TUV Product Services GmbH (TUVPSG)   Use to commence in early 2008 (see note)   TUV Rheinland of North America, Inc. (TUV)   Mark above used for products meeting only U.S. standards Mark above used for products meeting both U.S. and Canadian standards       NRTL previously used mark above but ceased authorizing on or about January 2000.   Underwriters Laboratories Inc. (UL)       Marks below used for products meeting only U.S. standards Marks below used for products meeting both U.S. and Canadian standards Basic marks Equivalent to above "Used on products which UL has evaluated for specific properties, a limited range of hazards, or suitability for use under limited or special conditions. Typically, products Classified by UL fall into the general categories of building materials and industrial equipment." Examples: fire doors, protective gear for fire fighters, industrial trucks. Wyle Laboratories (WL)   1 Certification marks registered by the NRTL with the US Patent and Trademark Office. Some NRTLs may have additional marks; however, the core logo of the additional marks should be the same as represented here. If you have questions about the authenticity of any mark, contact the NRTL. 2 OSHA requirements for testing and certification of gas operated equipment is limited to equipment using "liquefied petroleum gas" ("LPG" or "LP-Gas"). CSL Note: Notice of Allowance issued on 11-21-06 NSF Note: Version of mark previously shown on OSHA web page - never placed in use TUVAM and TUVPSG note: Notice of Allowance issued on 10-9-07. | Introduction | NRTLs | FAQs | Application | Fees | Regulation | Directive | Presentation | More |

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