Checking Fume Hoods

Standard Operating Procedure


Spot-Check of Air Flow in Fume Hood

Updated 11/28/2023


Measure velocity of air flow into laboratory fume hoods using a Anemometer/Vaneometer (air velocity meter). The purpose is to confirm function of fume hood immediately before use.

A piece of tissue paper or kimwipe may be used ONLY to roughly check for hood exhaust flow. If the tissue is not being pulled into the fume hood, DO NOT PROCEED; notify CMC (x1327) or EHS (x3700) staff immediately. 

Designated Area:

Fume hoods are present in most laboratories conducting work with hazardous materials. Testing of chemical fume hoods should be conducted under the same conditions as actual use. If a large number of hoods are located in one laboratory, they should be turned on at least thirty (30) minutes prior to testing to obtain accurate results.

Personal Protection:

Safety Goggles, Lab coat and appropriate gloves (use the proper glove to handle equipment/chemicals present in the hood at time of testing). Although this task does not involve the use of any hazardous materials, there may be equipment and/or chemicals present in the Fume Hood at the time of testing.


No formal training is necessary to complete test using Vaneometer.


  1. Turn on hood.
  2. Check the vaneometer. The ribbon may need to be replaced if it is creased/bent or torn.
  3. Match the arrow on the hood sash with the arrow on the side panel of the hood.
  4. To acquire reading, hold vaneometer in the center of the hood.
  5. Acceptable standard -Chemical fume hoods should operate at a face velocity of (80-120) Linear Feet Per Minute.

Reporting Results:

If tested fume hood results are not within the acceptable standard, do not use the hood.

  • Contact the Chemical Management Center or EHS Dept. at or extension 3700.
  • After-hours fume hood issues: Call YSU Police Dispatch at (330)941-3527 or x911 FROM A CAMPUS PHONE

Hazards involved in procedure:

Use caution when testing fume hoods; equipment and chemicals may be present.

Approval Required:

No formal approval is necessary to test fume hood with a vaneometer.