Labconco PuriCare Vertical Flow Stations 3830020 - Manual (Page 19)

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Chapter 4: Theory Of Operation And Safety Precautions
Directional Airflow
Directional airflow plays a key role in the Vertical Flow
Station’s performance. Sterile, HEPA filtered air flows
downward throughout the work area, protecting the
animals inside from external and cross contamination.
All of this “supply” air and some room air is drawn into
the front of the station at the grille. This “curtain” of air
makes it difficult for aerosols to escape out of the work
area and into the outside environment.
Figure 4-1