13 | Checkout Gases and Replacement Parts INFICON
302 / 319 074-594-P1H Micro GC Fusion Operating Man-
ual
13.1.1 Universal Checkout Gas
Universal checkout gas contains fixed gases and C1-C6 components in a nitrogen
balance. See the table below for the component concentrations.
Universal checkout gas is not intended to be a substitute for a calibration
standard for any specific applications. INFICON recommends acquiring a
calibration standard gas that meets composition requirements appropriate for
the specific application.
Components Concentration (Mole %)
hydrogen 10.00%
oxygen 1.00%
nitrogen balance
methane 5.00%
ethane 0.10%
ethylene 0.20%
carbon dioxide 1.00%
carbon monoxide 1.00%
acetylene 0.05%
propane 0.1%
propylene 0.05%
n-butane 0.05%
n-pentane 0.05%
n-hexane 0.05%