Compound | Concentration |
N2 | 70 - 75 (V/V)% |
CO2 | 5 - 25 (V/V)% |
H2O | 9 - 14 (V/V)% |
O2 | 0.7 - 10 (V/V)% |
SO2 | 0 - 1500 ppm |
CO | 50 - 150 ppm |
Dust | 100 - 800 ppm |
Heavy metals | 0.05 - 0.5 ppm |