# FM 3260 — Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced For FM 3260, laboratory is Intertek Testing Services NA, Inc; standard title is Flame Radiation Detectors for Automatic Fire Alarm Signaling, verified against its source on 2026-08-10. - **Laboratory:** Intertek Testing Services NA, Inc. _(verified: appears in the quote below)_ - **Standard number:** FM 3260 _(verified: appears in the quote below)_ - **Standard title:** Flame Radiation Detectors for Automatic Fire Alarm Signaling _(verified: appears in the quote below)_ ## What the source says > FM 3260 | Flame Radiation Detectors for Automatic Fire Alarm Signaling | ## Source - https://www.osha.gov/nationally-recognized-testing-laboratory-program/its Last verified: 2026-08-10. Review by: 2026-12-08. Part of [Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced](https://referencesource.org/nrtl-recognition-scopes/).