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Thermonicolet Omnic Software User's Guide 6.1 (PDF) - Charles E ...

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8. When you are finished correcting the baseline, you can replace the<br />

original spectrum with the corrected version or add the corrected<br />

spectrum to a spectral window.<br />

To do this, select the desired option from the window selection box near the<br />

top of the Baseline Correct window and then choose Add or Replace. To close<br />

the Baseline Correct window without placing the corrected spectrum into a<br />

spectral window, click the Close button.<br />

Correcting baselines<br />

automatically<br />

Note<br />

Automatic Baseline Correct in the Process menu lets you automatically correct the<br />

tilted baseline of the selected spectra, with the baseline points selected by the<br />

software. See “Why isn’t a baseline always flat and at zero absorbance?” and<br />

“What are the benefits of correcting baselines?” earlier in this chapter for more<br />

information.<br />

If a baseline is not just tilted but also has other undesirable characteristics, correct<br />

it using Baseline Correct. See “Correcting a baseline” for more information. ▲<br />

Correct baselines automatically<br />

1. Select the spectra whose baselines you want to correct.<br />

2. Select (with the region tool) or display (with the view finder) the spectral<br />

region in which you want the baselines corrected.<br />

3. Choose Automatic Baseline Correct from the Process menu.<br />

204 Thermo Nicolet

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