Nitrous oxide--does it need a disposal system?
D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D000397:Air Pollution / Q000517:prevention & control; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D009609:Nitrous Oxide / Q000009:adverse effects; D014691:Ventilation
D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D009609:Nitrous Oxide