UL 1821
What is the laboratory for UL 1821?
For UL 1821, laboratory is Intertek Testing Services NA, Inc; standard title is Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service, verified against its source on 2026-09-17.
UL 1821 | Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service |
— osha.gov, retrieved 2026-08-10
- Laboratory
- Intertek Testing Services NA, Inc.
- Standard number
- UL 1821 verified
- Standard title
- Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service verified
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/its