NLIR offers ultrafast MIDIR-Spectrometer delivering 130.000 spectra per second. Inline-, online- and offline measurement can be performed even under harsh environments on the production floor. The spectral properties of materials, coatings, liquids and gases are analyzed at high speed, which allows to control the production process. Furthermore, NLIR offers MIDIR detectors with cut off frequency of up to 25 GHz. Applications can be found in chemical kinetics, IR-communication, combustion processes and others. Detection limits in the range of a few fW/√Hz NEP (noise equivalent power) are available by default.