How to add curves

Introduction

In some method runs, several sequential chromatograms might have been created. This can occur, for example, when the instruction New chromatogram has been used in the method, thus creating different chromatograms during the run.

In order to view and evaluate the resultant curve of all the chromatogram parts, the curves must be added together. Usually, you have a number of chromatograms within the same result file and you want to add the curves. In some circumstances, curves might need to be imported from other result files.

Instruction

The table below describes how to add curves:

Step	Action
1	Select and view the first chromatogram in the sequence.
2	Choose Operations:Add. Result: The Add dialog box is displayed.
3	Select the first curve in the desired sequence in the left field. Select the second curve in the sequence in the middle field. Click the OK button to add the two curves together in a new result curve.
4	Open the Add dialog box again. Select the result curve (.ADD) from the previous addition in the left field. Select the next curve in the sequence in the middle field. Click OK to add the two curves together in a new result curve.
5	Repeat steps 3 and 4 until all curves have been added together. The final curve should be the cumulative curve for the whole run.

Note: All curves created using the Add operation receive the ADD suffix by default. The default curve name can be changed as needed. The original curves are distinguished in the chromatogram by underlined curve names.

2005-06-15