Displaying and Using UV Spectra
Displaying and Overlaying Single Spectra

In addition to peak spectra (= spectrum in the peak maximum or spectrum at a defined peak height), Chromeleon is capable of displaying any other spectrum of a chromatogram at the time t.

To extract any spectra of a chromatogram via a mouse click, follow the steps below:

• Enable the Spectra/I-t Plots Tool on the context menu or click the corresponding icon on the Integration Toolbar

• A spectra symbol that is appended to the mouse pointer indicates that the mode was changed.

• Click anywhere in the chromatogram to display the corresponding spectrum.

• Repeat the action while pressing the SHIFT key to overlay several spectra.

Displaying Spectra of Different Samples

To compare spectra of different samples objectively, perform a chromatogram comparison:

• Compare two chromatograms by displaying an additional chromatogram in the Integration window (see Integration  Chromatogram Comparison).

• Enable the Spectra/I-t Plots Tool and select single spectra by clicking various places in the chromatogram while pressing the SHIFT key.

 Note:

UV spectra are overlaid in one window.