Laboratory hoods are a combination containment device and exhaust system. When the air in the lab hood is fouled with smoke or odor, the exhaust system will vent the contained space and protect the room occupants. Sophisticated hood designs include supply fans, utility outlets, fire protection systems and variable-speed fan controls. If the chemicals used in the laboratory are corrosive or volatile, special construction is necessary. Corrosion resistant alloys, spark resistant materials, special motors and fan shaft seals are required.
Bearings and motors according to local code. Shaft seals with ceramic felt elements.
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