Varian Micro-GC 490-GC, User Manual

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Introduction and Initial Operation
Varian, Inc. User Manual Micro-GC Page 23
COLUMN CP-SIL 5 CB 6 METER UNHEATED
The natural gas components, mostly hydrocarbons, separate in the same order on the
non-polar and medium-polar CP-Sil CB columns. Nitrogen, methane, carbon dioxide,
and ethane are not separated on these columns. They produce a composite peak. For
separation of these components a HayeSep A column is advised.
Instrument parameters
Column temperature : 50°C
Injector temperature : NA
Column pressure : 150kPa (21PSI)
Sample time : 30s
Injection time : 40ms
Run time : 60s
Detector sensitivity : Auto
Peak identification
ID Component Concentration
1 Composite Balance
2 Ethane
8.1%
3 Propane 1.0%
4 i-Butane 0.14%
5 n-Butane 0.20%