How do the chemical fume hoods work?

Chemical fume hood functions operate with a movable front sash and an interior baffle. Sash works as a barrier between chemical reactions and workers. According to the size of the hood, sash movement may become vertical, horizontal, and combine both. 

Baffle helps to exhaust air directly. They are adjustable to enhance airflow. You remember that baffle should open without any blockage. 

Without any curves, airfoil allows a massive amount of workflow as a part of the hood. All this process proceeds efficiently if your fume hood is excellent.