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Laboratory Fume Hoods
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Selection Guide — CONFIGURATION — BENCH HOOD

Bench Hoods are set on a worksurface approximately 36″ above the floor and provide a convenient work area for the standing position. A minimum of 42″ of interior working height is provided.

Selection Guide — AIR VOLUME — OPEN BY-PASS

Open by-pass fume hoods are designed for operation on constant air volume exhaust systems. The air by-pass provides for an alternate route for air to enter the hood as the sash is closed. The size of the by-pass is set so that, as the sash is closed, the velocity of the air increases to no more than three and one half times the velocity with the sash fully open.

Selection Guide — SASH TYPE — VERTICAL SASH

Vertical sash hoods provide the best horizontal and vertical access to the hood interior but they also have the highest exhaust requirements. The exhaust requirements can be reduced by using gravity sash stops, although, this restricts the vertical access into the work area. Split sash hoods can be used where needed for two work areas.

Selection Guide — HOOD USE — GENERAL PURPOSE

General Purpose hoods are designed to contain the fumes generated in most chemical reactions. They are offered in a choice of liner materials including, fiberglass reinforced polyester, (Kemglass), phenolic resin, and Type 304 stainless steel.

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