Chemical fume hoods are a primary engineering control used in laboratories. Chemical fume hoods must be ASHRAE-110 certified at installation and balanced by HVAC personnel to work in conjunction with general lab ventilation so that laboratory airflow is negative to the hallway.
Safety Tip - Loose debris in hood can clog exhaust ducts
Never leave loose items such as kimwipes, paper towels, aluminum foil on the surface of a chemical fume hood. These materials can easily get loose and fly into the rear baffles of the hood, disrupting or preventing proper airflow inside the exhaust duct. If this should happen, submit a Famis Service Request to have Physical Plant Department (PPD) to help you remove it.