Thermo Scientific TSQ 8000, User Manual

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4
Creating a Method
Creating a GC Method
Thermo Scientific TSQ 8000 Evo User Guide 79
Figure 78. GC Oven Settings
3. Select a maximum of 32 temperature ramps, each with its own ramp rate, final
temperature, and hold time. Each temperature ramp begins at the previous ramp's
temperature after the hold time has expired. A typical program has one or two ramps. The
GC temperature profile is the primary method for separating your analytes from each
other, the solvent, and the matrix. Your temperature profile must be optimized for your
analysis needs.
4. You can also select the maximum allowed oven temperature, which should be set to the
maximum temperature allowed by your method, not the maximum allowed by your
column. The maximum temperature allowed by the GC is 450 °C.
5. Select the prep-run timeout. The prep-run timeout is the maximum amount of time that
the GC will wait before it gives up on an injection. As an example, with the default value
of 10 minutes, if the GC is ready to receive an injection, but does not receive it after ten
minutes, the GC will stop waiting. This usually occurs in case of an error.
6. Set the equilibration time. The equilibration time is a delay between when the GC is at
temperature and when the GC reports as being ready. The equilibration time is typically
set to 0.5 minutes.
CAUTION INSTRUMENT DAMAGE. Be sure not to overheat the GC column or it
may contaminate the instrument.