Why do we use a fume-hood?

Inhalation is a major route of entry of chemicals into the body. Chemical fumes and vapours can directly enter our bloodstream and small particles can lodge in the alveolar region of our lungs. A properly designed and operated fume-hood reduces exposure to hazardous fumes, vapours, gases and dusts. A fume-hood confines hazardous airborne material by diluting it with a large amount of air, drawing it through an exhaust system and then expelling the air in vents locate on the roof of building or scrubber system. Proper use of the fume-hood sash can also shield the worker from an uncontrolled reaction. Fume hoods are inspected and tested annually to assess performance standards but it is up to you to use a fume-hood safely.