Pure Methane | ||||
Component | Symbol | Mass fraction | Concentration | Units |
Methane | CH4 | ≥99.99 | ≥99.99 | % |
Hydrogen | H2 | <10 | ≤05 | ppmV |
Oxygen | O2 | <10 | ≤05 | ppmV |
Nitrogen | N2 | <35 | ≤25 | ppmV |
Other hydrocarbon | CxHy | ≤25 | ≤20 | ppmV |
Moisture | ≤10 | ≤8 | ppmV |