Gas Chromatograph

A Gas Chromatograph can be used to identify compounds.

Collecting Data with a Gas Chromatograph

  1. Click Collect.
  2. Set the data-collection settings (see below for more information about the settings).
  3. Click Done to initiate warm up. Note: A new message will appear, “GC Not Ready,” and the LED on the GC will be red. The GC will take a few minutes to warm up and stabilize. When the GC is ready for injection, the message will read, “Ready to Inject,” and the LED will turn to green.
  4. Complete the stages of this step in quick succession. First, insert the needle into the injection port of the GC. Then, simultaneously click Collect in the dialog and depress the syringe plunger. Finally, pull the needle out of the injection port.
  5. When data collection is complete, you can analyze your chromatogram using the peak integration feature.

Gas Chromatograph Data Collection Settings

Start Temperature

The GC will warm to this temperature before you insert the sample.

Hold Time

The length of time for which the starting temperature will be maintained.

Ramp Rate

The rate at which the GC heats up from the starting temperature to the final temperature.

Final Temperature

The maximum temperature to which the GC is heated during this run.

Hold Time

The length of time for which the final temperature will be maintained.

Total Length

The length of data collection.

Pressure

The amount of pressure above ambient that is pushing the carrier gas through the GC.

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