Image: Fume hood conventional

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Description: Figure 10. Conventional (constant-flow) laboratory chemical hood. The constant-flow hood constitutes the oldest, simplest chemical hood design. The exhaust fan introduces a constant volumetric air flow moving through the sash opening. For this hood design, the face velocity is lowest when the sash is wide open; when the sash is lowered the face velocity increases.
Title: Fume hood conventional
Credit: General Safe Practices for Working with Engineered Nanomaterials in Research Laboratories (in en-us). U.S. National Institute for Occupational Safety and Health pp. 20–21 (May 2012).
Author: U.S. National Institute for Occupational Safety and Health
Usage Terms: Public domain
License: Public domain
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