Reference Source

UL 844

For UL 844, standard title is Electric Lighting Fixtures for Use in Hazardous (Classified) Locations; nrtl is CSA; laboratory is CSA Group Testing and Certification Inc; status is currently recognized, recorded from its source on 2026-08-10.

Test standard
UL 844 verified
Standard title
Electric Lighting Fixtures for Use in Hazardous (Classified) Locations verified
NRTL
CSA verified
Laboratory
CSA Group Testing and Certification Inc. verified
Status
currently recognized our reading
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA-recognized labs (NRTLs) can certify to a given test standard

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 844 | Electric Lighting Fixtures for Use in Hazardous (Classified) Locations |

osha.gov, retrieved 2026-08-10

Source

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