Natural Gas Standard
The natural gas standards are intended to serve as the primary carbon and hydrogen stable isotope reference materials for methane, ethane, and propane, and will be used in research and technology development by industry, academia, and governmental agencies.
Few examples of Natural Gas Standard are given below
| Ethane 8.4-8.96% + C3H8 5-6% + iso-Butane 0.9-1.3% + N-Butane 1-1.6% + N-Pentane 0.2-0.4% + N-Hexane 0.15-0.4% + CO2 1-2.3% + N2 0.2-0.5% + CH4 Balance | CGM09273610 |
| CO2 1% + O2 0.25% + N2 1.25% CH4 85% + C2H6 5.50% + C3 3% + iC4 1% + nC4 1% + iC5 0.50% + nC5 0.50% + C6 1% | CGM11344710 |