This table was reviewed on 30 April 2025 and refers to the ISO 17025 scope (Issue No. 059) for EffecTech. For details of the Expanded Measurement Uncertainty (k = 2) for each component, please check the most recent version of the ISO 17025 scope.

Componentamount fraction (% mol/mol)
nitrogen0.1 to 1.8
methane79 to 100
ethane0.1 to 14
propane0.1 to 4
iso-butane0.02 to 1.3
n-butane0.02 to 1.3
iso-pentane0.01 to 0.16
n-pentane0.01 to 0.16