FTIR Spectrophotometers offer special optical interfaces.
Press Release Summary:
With special optical interfaces, FTIR Spectrophotometers accommodate large accessories such as long path gas cells. Interfaces for these small FTIR compartments enable use with such FTIRs as BRUKER's Alpha, Thermo's IS5, and PerkinElmer's Spectrum Two, which facilitate their use as components of compact rack mountable, field deployable gas analysis systems.
Original Press Release:
Gas Cells for Small FTIRs and Field Deployable Gas Analysis Systems
International Crystal Laboratories has created special optical interfaces for small size FTIR spectrophotometers useful for gas analysis systems.  These FTIR spectrophotometers require adaptations to accommodate large accessories such as long path gas cells. These interfaces for these small FTIR compartments enable use with such FTIRs as  BRUKER's Alpha (pictured), Thermo's IS5, and PerkinElmer's Spectrum Two, which facilitate their use as components of compact rack mountable, field deployable gas analysis systems.
Pictured is the Bruker Alpha and a heated ICL gas cell mounted with a custom optical interface which creates a purge zone between the cell and the spectrophotometer, contains f-matching transfer optics for excellent throughput and insulates the high temperature cell from the transfer optics and spectrometer.