UL 525
For UL 525, standard title is Flame Arresters for Use on Vents of Storage Tanks for Petroleum Oil and Gasoline; nrtl is SWRI; laboratory is Southwest Research Institute; status is currently recognized, recorded from its source on 2026-08-10.
- Test standard
- UL 525 verified
- Standard title
- Flame Arresters for Use on Vents of Storage Tanks for Petroleum Oil and Gasoline verified
- NRTL
- SWRI verified
- Laboratory
- Southwest Research Institute verified
- Status
- currently recognized our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
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