NIR Solutions by Buchi
- Application and maintenance notes, accessories and support for spectrometers, in food, feed and pharmaceutical industries, from manufacturer based in Flawil, Switzerland.
- http://www.nirsolutions.com/

Guided Wave Inc.
- Designs and manufactures NIR spectrophotometric analyzers, with fiber optics and high efficiency sample cells, for laboratory or process analysis. Includes applications, literature and support from El Dorado Hills, California.
- http://www.guided-wave.com/

Brandywine Research Laboratory, Inc.
- Offers testing services using Fourier transform, and supporting elemental analysis, ion exchange chromatography and scanning electron microscpy. Includes notes on spectra interpretation, equipment overview, prices and contacts in Newark, Delaware.
- http://www.brandywinelab.com/