Introduction and temporary chromatograms

Contents of a chromatogram

Chromatograms can be viewed in the Evaluation module.

A chromatogram includes a number of curves that have been created during a method run, such as UV, conductivity, pH, fraction marks, etc. A chromatogram also contains the curves created and saved during an evaluation session. The original raw data curves cannot be deleted or modified, but they can be used as the basis for evaluation procedures and subsequent creation of new curves.

Temporary chromatograms

A Temporary chromatogram is essentially an empty chromatogram that is specific to the Evaluation module. It is also user-specific, so that all users have their own.

Information contained within a Temporary chromatogram is automatically saved from one evaluation session to the next, but is not saved within the result files.

How to copy curves into Temporary

Curves can be copied into Temporary and comparisons or evaluations can be performed. This is particularly useful if you do not want to clutter up your original chromatograms with a large number of curves. It can also be used to keep blank run curves or curves to compare when you open different result files.

The table below describes how to copy curves into Temporary:

Step

Action

1

Open a result file.

2

Select Edit:Copy:Curves.

Result: The Copy Curve dialog box is displayed.

3

Select a source chromatogram and a curve to be copied in the Source Chromatogram fields.

4

Select Temporary as the target chromatogram and a position for the new curve in the Target Chromatogram fields.

5

Click the Copy button.

Result: The curve is copied into the Temporary chromatogram.

Click the Close button.

How to clear a temporary chromatogram

The table below describes how to clear the contents of a temporary chromatogram:

Step

Action

1

Open the relevant result file.

2

  • Select Edit:Clear Temporary Chromatogram.

  • Click the Yes button to confirm.

2005-06-15