Line drawing representing a biosafety cabinet and the air flow through that system.

FIGURE 9.13Example of a Class II biosafety cabinet

Room air passes around the user through the grill at the front of the cabinet. Filtered air passes into the cabinet over the materials, providing a clean environment for the materials in the cabinet. Potentially contaminated air moves through the grill and slots, across the cabinet, and passes through HEPA filters.

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.

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.