Varian Micro-GC 490-GC, User Manual

Page: 35 / 83

Introduction and Initial Operation
Varian, Inc. User Manual Micro-GC Page 27
COLUMN HAYESEP 40CM HEATED
The HaySep A column separates oxygen, methane, carbon dioxide, ethane, acetylene,
ethylene, and selected sulfur gases. Nitrogen coelutes with oxygen. Components with a
higher molecular weight than propane have long retention times on this column.
Maximum allowable column temperature: 160

C
Instrument parameters
Column temperature : 50°C
Injector temperature : 110°C
Column pressure : 150kPa (21PSI)
Sample time : 30s
Injection time : 40ms
Run time : 60s
Detector sensitivity : Auto
Peak identification
ID Component Concentration
1 Nitrogen 0.77%
2 Methane Balance
3 Ethane 8.1%