Refinery Gas Standard #1: Hydrogen, 40.750%; argon, 0.500%; nitrogen, 4.000%; carbon monoxide, 1.000%; carbon dioxide, 3.000%; methane, 8.500%; ethane, 6.000%; ethylene, 2.000%; propane, 7.000%; Propylene, 3.000%; propadiene, 0.850%; isobutane, 6.000%; n-butane, 4.000%; isobutylene, 2.000%; 1,3-butadiene, 3.000%; cis-2-butene, 2.000%; trans-2-butene, 2.000%; 1-butene, 2.000%; isopentane, 1.000%; n-pentane, 1.000%; n-hexane, 0.500%

Refinery Gas Standard #2: Hydrogen, 12.500%; argon, 1.000%; nitrogen, 37.200%; carbon monoxide, 1.000%; carbon dioxide, 3.000%; methane, 5.000%; ethane, 4.000%; ethylene, 2.000%; acetylene, 1.000%; propane, 6.000%; propylene, 3.000%; propadiene, 1.000%; cyclopropane, 0.040%; isobutane, 5.000%; n-butane, 4.000%; isobutylene, 1.000%; 1,3-butadiene, 3.000%;
cis-2-butene, 2.000%; trans-2-butene, 3.000%; 1-butene, 2.000%; 2-methyl-2-butene, 0.200%; isopentane, 1.000%; n-pentane, 1.000%; cis-2-pentene, 0.400%; trans-2-pentene, 0.160%; pent-1-ene, 0.400%; n-hexane, 0.100%

Refinery Gas Standard #5: Hydrogen, 12.500%; argon, 1.000%; nitrogen, 37.200%; carbon monoxide, 1.000%; carbon dioxide, 3.000%; methane, 5.000%; ethane, 4.000%; ethylene, 2.000%; acetylene, 1.000%; propane, 6.000%; propylene, 3.000%; propadiene, 1.000%; isobutane, 5.000%; n-butane, 4.000%; isobutylene, 1.000%; 1,3-butadiene, 3.000%; cis-2-butene, 2.000%; trans-2-butene, 3.000%; 1-butene, 2.000%; 2-methyl-2-butene, 0.200%; Isopentane, 1.000%; N-pPentane, 1.000%; cis-2-pentene, 0.400%; trans-2-pentene, 0.200%; pentene-1, 0.400%; hexanes plus, 0.100%

Precise concentrations are provided on the data sheet included with each cylinder and may vary slightly from those listed here