National Physical Laboratory

Refinery gas

Refinery gas

NPL provides high-accuracy gas standards for the analysis of a range of refinery gases. These gases, which include syngas, coke oven gas, reformer gas and blast furnace gas, are produced and emitted during the production and refining of petroleum products and solid fuels.

NPL's refinery gas standards are typically used to calibrate gas chromatographs (GCs), enabling the composition of real refinery gases to be determined. This allows the user to calculate the carbon content and other physical parameters of the gas, thus ensuring compliance with carbon trading legislation.

The range of refinery gas standards covered by NPL's UKAS accreditation is shown in the table below. Mixtures containing other components may be prepared on request.

Component Amount fraction
range (cmol/mol) *
Nitrogen 0.1 to 95
Carbon monoxide 0.1 to 11
Carbon dioxide 0.3 to 8
Oxygen 0.2 to 2.5
Hydrogen 1 to 70
5 to 10
1 to 85
0.3 to 35
0.1 to 12
0.025 to 2
Propane 0.1 to 18
Component Amount fraction
range (cmol/mol) *
0.04 to 7.0
i-butane 0.1 to 4
n-butane 0.1 to 6
1-butene 0.015 to 1.55
0.018 to 1.2
trans-2-butene 0.015 to 0.85
cis-2-butene 0.015 to 0.35
0.01 to 0.65
0.05 to 0.8
0.05 to 0.8

* 1 cmol/mol is equal to 0.01 mol/mol and is equivalent to the 'unit' % mol/mol often used by the refinery gas industry.


Please email or telephone Customer Services on +44 20 8943 6151.

Last Updated: 16 Jun 2016
Created: 19 Sep 2013


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