# UL 121201 — Which OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

For UL 121201, laboratory is LabTest Certification Inc; standard title is Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations, verified against its source on 2026-08-10.

- **Laboratory:** LabTest Certification Inc. _(verified: appears in the quote below)_
- **Standard number:** UL 121201 _(verified: appears in the quote below)_
- **Standard title:** Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations _(verified: appears in the quote below)_

## What the source says

> UL 121201 | Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations |

## Source

- https://www.osha.gov/nationally-recognized-testing-laboratory-program/lc

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/).