Fumehoods

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
     from Esco

Keep your head ouside of the hood

Hood Safety

Work as far into the hood as possible

Hood Safety

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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