Schematic of a chemical hood scrubber. Air from the fume hood is shown to enter the scrubber, pass into the packing bed, which is wetted by the spray manifold. Liquid from the spray manifold passes through the packing bed and is collected in the scrubbing liquor sump. The liquor is then re-circulated to the spray manifold after passing through controls to maintain pH and ionic strength. The air from the hood continues through the spray manifold and through a mist eliminator before clean air exits through the exhaust system.

FIGURE 9.10Schematic of a typical laboratory chemical hood scrubber

From: 9, Laboratory Facilities

Cover of Prudent Practices in the Laboratory
Prudent Practices in the Laboratory: Handling and Management of Chemical Hazards: Updated Version.
National Research Council (US) Committee on Prudent Practices in the Laboratory.
Washington (DC): National Academies Press (US); 2011.
Copyright © 2011, National Academy of Sciences.

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