This is a Bruker Optics IFS 66 V/S FTIR Spectrometer which is a state-of-the-art Fourier Transform infrared instrument that can achieve up to 100 spectra per second. It is a powerful mid-IR vacuum spectrometer for demanding applications in the analytical and research laboratory. The spectrometer features digital control (DSP) for the optics bench, an acquisition processor (AQP) which operates independently from a fast PC data system and an extensive analytical software package. The reflection unit consists of a vacuum tight connection to the side walls of the spectrometer and an optical system for reflection spectroscopy. A bellows system in the reflection unit houses the electrochemical cell customized for IFS 66vS/S FTIR Spectrometer.