Directional Airflow; Cabinet Air Intake (Front Grille) - Labconco Cell Logic+ B2 User Manual

Biosafety cabinets

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Directional Airflow

Directional airflow also plays a key role in cabinet performance. Air is drawn into the

front of the cabinet at the front grille. This "curtain" of air makes it more difficult for

aerosols to escape out of the cabinet's work area and into the laboratory environment.

This airflow is often calculated and referred to as the Inflow Volume or Average Inflow

Velocity. This is illustrated in Figure 5-2.

Figure 5-2

Front Grille

The location, size, and pattern of the grille openings in the work area affect cabinet

containment and performance. The front grille's airfoil profile, and air intake openings

play an important role in establishing Directional Airflow, as described previously. See

Figure 5-2.

Note: Do not block or obstruct the grille openings of the biosafety cabinet.

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