How To Eliminate Heat Effect In Your Fume Hoods

By Luke Savage, LEED Green Associate, Sales Engineer, Labconco Corporation

Chemical procedures commonly require the introduction of heat. This is typically in the form of a hot plate or open flame. While the best place to perform these types of chemical procedures is inside a chemical fume hood, most people are unaware of heat’s effect on the airflow through the fume hood, and the potential impact on containment.

A fume hood under normal operation has air entering through the face opening, as well as through an upper by-pass opening. As the sash is raised, less air enters the by-pass, and as the sash is lowered, more air enters through the by-pass.