Fume Hood Basics
Summer is here. The birds are singing, the grass is growing and the annual fume hood inspections for IUPUI have been completed.
Fume hoods play a very important role in laboratory safety. A properly functioning fume hood will prevent exposure to harmful chemicals if used properly. Improper usage of a fume hood or a poorly functioning fume hood can release harmful chemicals into the laboratory exposing occupants.
The EHS department tests all fume hoods on campus for the proper face velocity. The minimum face velocity is 80 fpm (feet per minute) for a standard fume hood and 60 fpm for a high performance hood. There are currently two brands of high performance hoods in use on the IUPUI campus, the Kewaunee LV and the Labconco Protector XStream.
All fume hoods that pass our minimum face velocity requirement will be tagged with a yellow sticker showing the maximum height for your fume hood sash and the average face velocity. If a fume hood fails to meet the minimum requirement, it will be tagged with a “Do Not Use” sign. If you find your hood tagged with one of these signs, please do not use the fume hood until the fume hood is fixed by facilities and the hood has been certified and the sign has been removed by Environmental Health and Safety.
Most fume hoods on campus have a velocity alarm. If the hood is alarming please close the sash and contact the Campus Facility Services Trouble Line at 278-1900 immediately. Do not open the sash or use the hood until it has been cleared for use by Environmental Health and Safety.
In addition to the fume hood monitor you can also tape a strip of tissue paper or Chemwipe to the bottom edge of the sash as a visual indicator that air is being pulled into the hood. The airflow should be strong enough to pull the paper inward. If you feel you do not have adequate flow, please close the sash and contact the Campus Facility Services Trouble Line at 278-1900 immediately. Do not open the sash or use the hood until it has been cleared for use by Environmental Health and Safety.
Here are some fume hood basics:
Always make sure the hood is operating properly prior to use
Keep all work and apparatus at least 6 inches inside the face of the hood
Keep the sash closed except when using the hood
Always keep the sash at or below the line indicated on the yellow inspection sticker when using the hood
Do not use the fume hood as a chemical storage area
Do not block the baffles with equipment or containers
Do not put your head inside the fume hood
Always wear appropriate PPE when working with chemical hazards
Please contact our office at firstname.lastname@example.org or 274-2005 if you have any questions.