Laminar Flow Operating Theatre

Air Velocity Sensors: Critical Areas should have laminar airflow of 90 fpm ± 20%, or 28 m/min ± 20% Airflow Monitors, Laminar Air Flow Hoods: During average supply air velocity testing, the average reading must be between 120-130 fpm, or 35-40 m/min.

Laminar flow theatres aim to reduce the number of infective organisms in the theatre air by generating a continuous flow of bacteria free air. In laminar flow theatres air may be 'changed' in theatre more than 300 times per hour compared to standard positive pressure theatre rates of 15-25 air changes per hour