title: The evaluation and improvement of an anti-pollution system.
abstract: A recently installed anti-pollution system, initially designed to function in a passive mode, was evaluated, but found to be inconstant in its performance. A simple method of making the system active is described and evaluated.
mesh_terms: D000397:Air Pollution / Q000517:prevention & control*; D000769:Anesthesia, Inhalation / Q000295:instrumentation; D004865:Equipment and Supplies, Hospital / Q000592:standards; D006749:Hospital Design and Construction; D009873:Operating Rooms / Q000592:standards*; D011312:Pressure; D014691:Ventilation