There are a number of companies selling NIR instrumentation. These are a few worth considering.
Control Development provides low cost diode array benchtop instruments as well as a wireless, explosion-proof instrument for following pharmaceutical processes in the process stream.
NIRSystems, a pioneer NIR company with over 35 years of experience, supplies benchtop and process instruments. Based on rapid grating and diode-array technology, they offer many software features absent in other packages and are now fully compatible with "Unscrambler" and their software works with Microsoft Vista.
Emil W. Ciurczak
Doramaxx Consulting Near-Infrared/Raman/PAT/QbD/DoE