A ventilated germ‐free cabinet for the microbiological laboratory

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Abstract
The design of a cabinet for the aseptic manipulation of material is described. The interior surfaces of the cabinet are sterilized by swabbing with a germicide. Germ‐free conditions are maintained during operation by means of a positive pressure of sterile air. A fan and filter unit attached to the cabinet is used to blow sterile air into the cabinet in sufficient quantity so as to flow out of the hand ports at a velocity of 50 ft./min. In the design, careful consideration was given to the ease of manipulations in the cabinet.

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