UL 525

For UL 525, laboratory is Southwest Research Institute; standard title is Flame Arresters for Use on Vents of Storage Tanks for Petroleum Oil and Gasoline, verified against its source on 2026-08-10.

Laboratory: Southwest Research Institute verified
Standard number: UL 525 verified
Standard title: Flame Arresters for Use on Vents of Storage Tanks for Petroleum Oil and Gasoline verified

Sourceosha.gov

Verified2026-08-10

Review by2026-12-08

DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

What the source says

UL 525 | Flame Arresters for Use on Vents of Storage Tanks for Petroleum Oil and Gasoline |

— osha.gov, retrieved 2026-08-10

Source

osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/swri

Last verified against source: 2026-08-10. Due for re-check by 2026-12-08. This page as Markdown · OKF bundle · full dataset as JSON.