OSHA's Nationally Recognized Testing Laboratory (NRTL) Program
Recognizes private sector organizations to perform certification for certain products to ensure that they meet the requirements of both the construction and general industry OSHA electrical standards. Each NRTL has a scope of test standards that they are recognized for, and each NRTL uses its own unique registered certification mark(s) to designate product conformance to the applicable product safety test standards. After certifying a product, the NRTL authorizes the manufacturer to apply a registered certification mark to the product. If the certification is done under the NRTL program, this mark signifies that the NRTL tested and certified the product, and that the product complies with the requirements of one or more appropriate product safety test standards.
Testing and Certification Bodies
- Frequently Asked Questions
- NRTL Program Regulations
- Submit an Application
- Appropriate Test Standards
- Standards No Longer Recognized
- NRTL Program Directive (October 1, 2019)
- NRTL Directive Fee Schedule Memo (October 16, 2019)
- NRTL Directive Implementation Memo (October 19, 2019)
- NRTL Fee Schedule (October 19, 2019)
- NEW NRTL Temporary Remote Inspection Memo (May 12, 2020)
- NEW NRTL Markings Memo (June 10, 2020)
- NEW NRTL Test Standard Memo (June 10, 2020)
- NEW NRTL Directive Compliance Extension (July 2, 2020)
- NEW NRTL 17025 Clarification Memo (August 25, 2020)
- NEW NRTL Memo to Allow Remote SNAP Audits (October 27, 2020)
- NEW NRTL SNAP Termination Final FRN