990 Micro Gc Operation; Create The Checkout Method; Run A Sample Analysis - Agilent Technologies 8860 User Manual

5 Operation

990 Micro GC Operation

990 Micro GC Operation

Create the checkout method

1 On the data acquisition system such as OpenLab CDS, set the parameters shown in
2 Save the method.

Run a sample analysis

1 After all the connections are made, send checkout method to GC. It takes about 40 minutes
for gasifier vaporizer stabilizing at 150°C from room temperature, 15 minutes for gasifier
transfer line stabilizing at 100°C from room temperature.
2 Open the sample cylinder valve.
3 Open the VENT needle valve, and allow to flush for two to three minutes, then check the
sample vent flow at the VENT-OUTLET.
4 Open the SAMPLE needle valve, and adjust a flow though the Micro GC of 10-20 mL/min.
5 Close the Vent needle valve. The default minimum needle valve output flow is
~4 to 10 ml/min. If you want to totally shut off the vent flow, use an end cap provided in the
installation kit.
Do not turn the knob with excessive force in order to protect the needle valve
C AU T I O N
6 Start the Micro GC run or sequence.
7 After finishing the analysis, close the sample source and open the vent to quickly purge the
residue.
8 Disconnect the sample source.
Agilent 8860, 8890, and 990 Micro GC Gasifier User Manual
Table 5.
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