Breathing Air Validation Breathing Air- The Quality of air is important to ensure that Respiration System will function properly and reliably. Clean, '. Natural Air is an odourless, colourless gas mixture. Air contains three major elements make up about 99.97% of Dry Air: Nitrogen (N2) at 78.09%, Oxygen (02) at 20.95, Argon (Ar) at 0.93%. An important minor component of natural air is Carbon Dioxide (C02) at 0.03% (300ppm).
