Agilent 990 Micro GC User Manual 43
4 Sample Gas Handling
Installing Sample Inlets 44
Using the External Filter Unit 47
Heated Zones 48
Connecting a Sample to the 990 Micro GC 49
990 Micro GC Optional Pressure Regulators 50
Manual Injection 56
The Micro GC is built for the analysis of gases and vapors only. You are advised to prepare a
noncondensing gaseous standard sample for routine checkup of the instrument. Sample
pressure should be between 0 and 100 kPa (0 to 15 psi), the temperature between 0 and 110 °C,
and it must be filtered, preferably through a 5-mm filter. Agilent always recommends the use of
the external filter kit (CP736729) between the injector and the sampling device.
For more details, see Using the External Filter Unit on page 47.
Liquids in sample gases must be avoided because they will critically damage the instrument.
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