National Physical Laboratory

Mid/Far IR (2.5 - 56 µm) Regular Reflectance

Infrared Spectrometry forms part of the Optical Radiation Measurement (ORM) group. This work began in the 1980s in response to a lack of traceable standards in the mid-infrared spectral region. The main driver has always been the needs of industry to measure infrared optical properties accurately. In recent years Quality Assurance systems in industry have also underlined the need for traceable measurement.

Infrared optical properties are important across a range of applications including spectroscopic analysis in pharmaceutical and chemical industries, thermal control in buildings, infrared tracking and guidance systems and both instrumentation and thermal control in satelites.

More information can be found on the following Technical Information Pages:


  1. J.R. Birch and F.J.J. Clarke, "Fifty categories of ordinate error in Fourier Transform spectroscopy", Spectroscopy Europe, (7/4), 16-22 (1995)


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Last Updated: 29 Jul 2014
Created: 1 Aug 2007


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