Route service connections under the airfoil.Never put your head in the hood when chemical are in the hood or experiments are in progress.Keep chemical hood sashes closed when the hood is not in use.Chemicals, including hazardous waste, should not be stored nor allowed to evaporate inside the hood.Perchloric acid should not be heated in a chemical hood unless it is specifically designated as a “Perchloric Acid Hood”.Inform the EHS office of the condition of the chemical fume hood. Discontinue work if the flow alarm sounds during use.Performing work at least six inches inside the hood will help prevent disruptive air currents from developing at the hood face. Perform all work and keep all apparatus at least six inches into the hood.For hoods equipped with horizontal sashes, slide the sashes to minimize the openings, keeping a panel between you and your work.Under no circumstances should the sash be lifted above the most current certification label. Vertical sashes should be lifted sashes only as far as needed to do your work comfortably. Use sashes to maximize protective shielding and ventilation.Check the flow monitor (if present) or use a "Kimwipe" to demonstrate flow into the hood. Verify that the chemical hood is drawing air.Ensure that your chemical hood has a current inspection sticker (dated within the last 365 days).The following work practices should be used to maximize the effectiveness of a chemical fume hood. Any toxic or volatile (tendency of a chemical to vaporize) chemical must be used inside of a chemical fume hood to lower the chances of inhalation exposure. Fume HoodsĬhemical fume hoods are designed to provide protection to researchers from chemicals and radiological exposure. See our section on laboratory equipment disposal and relocation. If the laboratory is moving all BSCs must be decommissioned by a certified technician. In order to schedule a certification please complete the Biological Safety Cabinet certification form. The cost of certification is the laboratory's responsibility. The EHS office contracts with Laboratory Certification Services, Inc. The importance of proper certification cannot be emphasized enough since persons who manipulate infectious microorganisms are at increased risk of acquiring an occupational illness when their BSCs are functioning improperly.Ĭenters for Disease Control (CDC), Primary Containment for Biohazardsīiological Safety Cabinets must be inspected and certified by a trained technician annually. Biological Safety Cabinet Certification Form For detailed information about fume hood monitors see poster 1 and poster 2.įor information on bio-hoods, see Selection Use and Installation of Biosafety Cabinets-CDC 2007.įor our department's policy on bio cabinet/hood certification, see EHS Policy on BSC Certification. Class II and III biological safety cabinets also provide product protection. Like fume hoods, biological safety cabinets provide protection for personnel, but focusing on biological rather than chemical agents. Laminar Flow Hoods protect materials from contamination. There are three types of hoods in use at Case Western Reserve University:įume hoods are an engineering control to protect personnel from hazardous fumes.
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