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Standard Workflow

NMR processing comprises certain operations to be performed on every spectra, others more esoteric. For the sake of the beginner, here we summarize the normal workflow for the most basic NMR experiment: the 1H monodimensional spectrum. Actually its processing already presents many difficulties. For the frequency and importance of the experiment, this workflow is a must to learn. This page works like a summary, pointing to more specific pages in the iNMR Help Book.

Importing the Spectrum

Certainly you need to transfer the spectrum to the Mac. If the format is supported, you can open it with the Open command. You will see a FID like this. Today it seems trivial, yet historically this used to be the most difficult part.

bullet Importing the Spectrum

bullet Free Induction decay (FID)

bullet Help on Help

Fourier Transform

The first operation is certainly the FT. There are many important options that you'd better learn. It's mathematic, yet you can effectively understand the effect of the options with observation. First use what iNMR suggests, then try your variations.

bullet Fourier Transform

bullet Weighting Functions

bullet Weighting in 1D Spectroscopy

Phase Correction

iNMR already corrects the phase by default. You should be a perfectionist, though. Manually refine the phase.

bullet Phase Correction

bullet Manual Phase Correction

bullet Automatic Phase Correction

Baseline Correction

Before Calculating Integrals, it is necessary to flatten the baseline. In the case of crowded 1H spectra, there's nothing more effective than the manual adjustment. Conceptually it's so simple. In practice...

bullet Baseline Correction

bullet Manual Baseline Correction

bullet Automatic Baseline Correction

Referencing the Frequency Scale

In the absence of TMS you can use the solvent peak.

bullet Axes & Scales

bullet Mouse, Marks and Tools

bullet Keyboard Controls


Define integration regions, so they include groups of peaks.

bullet Integrals

bullet Colors

bullet Undoing Operations