Run A Sample Analysis - Agilent Technologies 8860 User Manual

5 Operation

Run a sample analysis

If using the browser interface, save the gasifier checkout method using a new name.
NOTE
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 the flow rate through the GC sample loop as
needed, the typical flow rate is around 20~40 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 GC run or sequence.
Monitoring the various flows by means of a flow meter, or equivalent, will help in setting the
NOTE
optimal conditions.
In case of a high-pressure gas, the same procedure applies.
NOTE
7 After finishing the analysis, close the sample source and open the vent to quickly purge the
residue.
40 Agilent 8860, 8890, and 990 Micro GC Gasifier User Manual