Laboratory fume hoods minimize chemical exposure to laboratory workers. They are considered the primary means of protection from inhalation of hazardous vapors, mists and particulate matter. It is therefore, important that all pntentiallty harmful chemical work be conducted inside a properly functioning fume hood.

Constant air volume principle
Conventional hood: This term is used to describe a constant air volume (CAV) hood, an older, traditinally less elaborate hood design used for general protection of the laboratory worker. Because the amount elaborate hood design used for general protection of the laboratory worker. Because the amount of exhausted air is constant, the face velocity of a CAV hood is inversely proportional to the sash height. That is, the lower the sash, the higher the face velocity. CAV hoods can be installed with or without a bypass provision which is an additional opening for air supply into the hood.

Technical Data