Biosafety cabinet air flow direction

  • What direction does air flow in a biological safety cabinet?

    For proper containment, air is drawn into the cabinet at the opening and then down into the front grille.
    Together, the sash and inward flowing air provide an air “curtain” or barrier that is intended to keep cabinet air and room air separate from one another..

  • What is inflow and downflow in biosafety cabinet?

    Downflow and inflow characteristics ensure that no particles or microorganisms are released from the containment (personnel protection) or that products handled inside the BSC are contaminated by agents from outside (product protection) or by impurities released from other products (cross-contamination protection)..

Airflow is drawn into the front grille of the cabinet, providing personnel protection. The downward flow of HEPA-filtered air provides product protection by minimizing the chance of cross-contamination across the work surface of the cabinet.
For proper containment, air is drawn into the cabinet at the opening and then down into the front grille. Together, the sash and inward flowing air provide an air “curtain” or barrier that is intended to keep cabinet air and room air separate from one another.

Why is airflow important in a BSc?

Maintaining proper airflow within a BSC is critical to the sterility of the worked materials.
No items should disrupt the flow of air to the work surface, or to the air grills at the front and rear of the BSC work area.
Many common procedures conducted in BSCs can create splatter or aerosols.


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