Linking the calibration to a series of already measured chromatograms

If you have already measured chromatograms and wish to change the linked calibration, you can do so easily using the Batch reprocessing feature.

This command is especially useful when you have a large number of already measured chromatograms and you want to modify them.

Steps below will describe how to change the calibration of already measured chromatograms.

• Go to the Instrument window and use the Analysis - Batch... command.
• Select the files to be reprocessed in the left part of the dialog ① (Fig "Batch dialog with selected chromatograms"); multiple files can be selected by left-clicking them while holding the Ctrl or Shift key. For the demonstration, select all files with the names SAMPLE_VIAL_X-Y to be reprocessed.
• Check the Reprocess by Method ② checkbox, select the method to be used for the reprocessing (the one that has the correct calibration linked), and in Calibration part of the Options select the Update.
• Click the Proceed ③ button.

All selected chromatograms will now be linked to the calibration based on the selected method.

Batch dialog with selected chromatograms

• After the reprocessing is complete, open the Chromatogram window and load any reprocessed file (e.g. SAMPLE_VIAL_7-2.PRM) and look at the Result Table. All peaks present in the calibration are now identified and calibrated.
• Multiple chromatograms may be displayed at once. Switch to the Overlay mode by pressing the Overlay button found on the Overlay toolbar ( ⑦ in Fig "The Chromatogram window") and then open all reprocessed chromatograms altogether. You can click the Overlay button again to close all the chromatograms except the currently active one.