INFICON 3000 Micro GC Gas Analyzer Operating Manual - Manual (Page 266)

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3000 Micro GC Operating Manual
11.5 NGA Checkout Gas
The Natural Gas Analyzer (NGA) Checkout Gas may be used during installation of
a 3000 Micro GC configured for natural gas composition/BTU analysis to verify
chemical performance.
Table 11-10 lists the component concentrations.
NOTE: Do not use NGA Checkout Gas as a calibration standard for specific
natural gas applications. Since natural gas composition differs from region
to region, acquire a calibration standard that meets specific requirements.
Table 11-10 NGA checkout gas calibration standard
Components Concentration (Mole %)
nitrogen 5.2%
methane balance
ethane 9.0%
carbon dioxide 1.5%
propane 6.0%
isobutane 3.0%
n-butane 2.0%
isopentane 0.50%
n-pentane 0.50%
n-hexane 0.10%