What testing is necessary for fume hoods during commissioning?

Face velocity testing is essential during the commissioning of fume hoods as it measures the airflow through the sash opening of the hood. This testing ensures that the fume hood is functioning correctly and meeting the required safety standards for capturing and containing hazardous fumes, vapors, and particulates. The ideal face velocity creates a balance; it's fast enough to draw contaminants into the fume hood, but not so fast that it pulls air excessively from the surrounding environment, which can compromise safety.

Regular face velocity testing is critical to verify that the hood operates within the established parameters to protect users from inhalation exposure to harmful substances. If the face velocity is too low, it may not adequately contain the contaminants, posing risks to laboratory personnel. Conversely, if the face velocity is too high, it can lead to turbulence, which may allow contaminants to escape the hood. Hence, this testing plays a pivotal role in ensuring the fume hood operates safely and effectively.