To calculate the concentration of toxins through the air. Relative to the reference conditions temperature 25° c Pressure 760 mm of mercury or 1 atmosphere pressure and dry conditions. Excess air volume at 50 percent or burning the oxygen, 7 percent.
To calculate the concentration of air pollutants. According to the conditions of 25 ° C, pressure 760 mm Hg or a pressure of 1 atmosphere, dry conditions, the volume of excess air to burn 50 percent or 7 percent oxygen.
To calculate the concentration of toxic air. The reference temperature condition 25 C 760 mmHg pressure or pressure 1 atmosphere. Conditions of dry volume excess air in the combustion of 50 or oxygen percentage 7.