Natural gas standards
Lieferant: Restek
Three mixes, from lean to rich.
Standard #1: Nitrogen, 1.000 %; carbon dioxide, 0.500 %; methane UHP, 94.750 %; ethane UHP, 2.000 %; propane, 0.750 %; isobutane, 0.300 %; n-utane, 0.300 %; isopentane, 0.150 %; n-pentane, 0.150 %; hexanes plus**, 0.100 %
Standard #2: Nitrogen, 2.500 %; carbon dioxide, 1.000 %; methane UHP, 85.250 %; ethane UHP, 5.000 %; propane, 3.000 %; isobutane, 1.000 %; n-butane, 1.000 %; isopentane, 0.500 %; n-pentane, 0.500 %; hexanes plus**, 0.250 %
Standard #3: Nitrogen, 5.500 %; carbon dioxide, 1.500 %; methane UHP, 70.000 %; ethane UHP, 9.000 %; propane, 6.000 %; isobutane, 3.000 %; n-butane, 3.000 %; isopentane, 1.000 %; n-pentane, 1.000 %; hexanes plus**, 0.500 %
Precise concentrations are provided on the data sheet included with each cylinder and may vary slightly from those listed here.
**A complete list of hexanes plus is available.
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