FTIR spectroscopy (FTIR) is an analytical methodology that is widely used in industry and academic laboratories to understand the structure of individual molecules and the composition of molecular mixtures. FTIR spectroscopy uses modulated, mid-infrared energy to interrogate a sample. The infrared light is absorbed at specific frequencies related to the vibrational bond energies of the functional groups present in the molecule. A characteristic pattern of bands is formed, which is the vibrational spectrum of the molecule. The position and intensity of these spectral bands provide a fingerprint of molecular structure, making FTIR spectroscopy a highly adaptable and useful technique. FTIR spectroscopy is a great advance over the traditional dispersive infrared approach for a number of reasons including that the entire FTIR spectrum is collected in a fraction of a second and, by co-adding spectra, signal to-noise is improved.