A fume hood allows lab staff to work with potentially hazardous chemicals while minimizing the risk of exposure to toxic fumes. Chemical hood sashes (windows) allow workers to see and manipulate objects within the enclosure while keeping toxic or volatile chemical fumes out of the worker's face.
Industries that use fume hoods include:
Semiconductor manufacturing;
Surface finishing in the aerospace industry, such as nitric acid passivation;
University research department.
The used situation may decided by the type of fume hood. Because it has different structure and application conditions, the ventilation effect is not the same. The performance is good or bad of fume hood mainly depends on the section area of air moving.
