INFICON Explorer Portable Gas Chromatograph - Manual (Page 167)

Explorer Operator Manual
165
Multiple Point Calibration Curve
Multiple point calibration will provide the most accurate response. If you have a gas
dilutor or you have standards at more than one concentration, store multiple points
to get a more accurate calibration curve.
To create a multiple point calibration curve:
1. Select the Assay Tab.
2. Select the column/detector combination required for your compound. Ensure
your compound is already listed in the library.
3. Ensure Explorer is on and ready for operation.
4. Connect a sample to the Sample In port and begin a run.
5. When the analysis is complete, select the Assay tab. Open the file that was just
run.
The chromatogram will be displayed in the window
6. Double-click on the peak in the chromatogram and enter the concentration.
Normally, you will use a linear calibration curve.
7. Select Linear and SiteChart will update the calibration curve to incorporate the
new point.
8. If you have more than one compound at a different concentration then repeat
the procedure for the other peaks in the chromatogram.
9. Perform another run at another concentration and store the compound. Repeat
this procedure for all available concentrations.
10. If you need to remove a concentration point, select the point in the
area/concentration table and click Erase .
During calibration, the single point that is contained in the calibration gas is
used to update the curve.