BMBL Appendix A. Primary Containment: Biological Safety Cabinets Biosafety in Biomedical and Microbiological Laboratories
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BMBL Appendix A. Primary Containment: Biological Safety Cabinets (BSC)

Figure 2d. Table-top Model of a Class II, Type B3 BSC

A. front opening    B. sash    C. exhaust HEPA filter
D. supply HEPA filter    E. positive pressure plenum    F. negative pressure plenum   
NOTE: The cabinet exhaust needs to be connected to the building exhaust system
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