A laboratory fume hood is a type of ventilation system that primarily functions to provide personnel protection against toxic fumes, vapors and dust. Its secondary function includes protection against chemical spills, runaway reactions and fires by acting as a physical barrier.
Special applications require special fume hoods. Acid digestion hoods have PVC liners and Lexan sashes to resist etching by hydrofluoric acid. Floor-mounted hoods accommodate oversize apparatus. Perchloric acid hoods have washdown systems and either stainless steel or PVC liners to withstand acid exposure. Radioisotope Hoods have stainless steel one-piece liners.
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