Reference Source

UL 651

For UL 651, laboratory is NSF International; standard title is Schedule 40 and 80 Rigid PVC Conduit, verified against its source on 2026-08-10.

Laboratory
NSF International verified
Standard number
UL 651 verified
Standard title
Schedule 40 and 80 Rigid PVC Conduit verified
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

What the source says

UL 651 | Schedule 40 and 80 Rigid PVC Conduit |

— osha.gov, retrieved 2026-08-10

Source

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