Environment, Health and Safety
Summary of good hood practices:
- Sash openings should be kept to a minimum.
- Sources of emission should be kept at least 6 in. inside the hood.
- Users should keep their faces outside the plane of the haod sash.
- Storage in the hood should he kept to a minimum.
- Traps, scrubbers, or incinerators should he used, when appropriate.
- Remain alert to changes in air flow, whether or not the alarm sounds. EH&S can check
the flow rate even if the hood is not yet due for its annual performance check.
- To save energy, close sashes when hoods are not in use.
OSHA QuickFacts - Chemical Fume Hoods OSHA 3407 Rev. 10/2011
Working Safely with Laboratory Fume Hoods Poster
Keep your head ouside of the hood
Work as far into the hood as possible
Do not use the hood as a storage area
Do not put into hood
Minimize external air flow disturbances
Air Flow in hood
Do not use perchloric acid in a conventional fume hood
Do not use perchloric acid in fume
Do not leave uncapped bottles of chemicals or waste in the hood
Close all bottles of chemicals in hood
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