Reproducibility

Overview

The Reproducibility functionality allows you to evaluate the deviation of the peaks height/area assigned to a substance. In other words, the reproducibility of the measurement between different tracks is computed.

During the definition

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In the Definition tab of the evaluation, use the Advanced options button to make the Reproducibility field appear. This field can be activated/deactivated independently for each substance. In this mode:

  • the integration and substance assignment phases are done the same way as for other substances,

  • no calibration is performed, that’s why the Calibration mode and Range deviation fields are hidden, and

  • as a result, there’s no difference between sample and reference tracks.

In the results

In the Results tab, the reproducibility results are displayed in a separate tab. For each substance, the coefficient of variation (main result of the reproducibility measurement) and the average height/area are displayed. A grid view recalls the height or the area of the peaks assigned to the substance. Additionally, a graphic is displayed to help the visualization of the deviation of each value from the average.

../../../_images/reproducibility_results.png

  • The deviation from the average is expressed in percent.

  • In the graphic view, a red line shows the average value (deviation = 0%).

  • It’s possible to zoom in the graphic view.

  • Use the Export results (CSV) button to get a results table useful for future processing.

  • Use the Export to image button to get the image of a reproducibility graph, useful for future documentation.