Fourier Transform Infrared Spectral Library


The FTIR spectra in this library are stored as bitmap picture files in .PNG format.

To save a file, right-click and select “Save Picture As…”.

These figures are distributed under the terms of the Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium, provided the original source (this website) is properly cited. To view a spectrum, select a sample from the dropdown list below. Except where stated, the spectral range plotted is the mid-infrared “fingerprint” region (600 ~ 1900 wavenumbers).