Skip to main content
Thermo Fisher Scientific

ISN 0002 - Verification of Wavelength Accuracy in an FT-NIR Spectrometer


The success of many FT-NIR analyses is often limited by the wavelength accuracy of the instrument. The objective of this work was to determine the wavelength stability of the Nicolet Antaris™ FT-NIR spectrometer over time and to evaluate the wavelength accuracy between several systems. Spectra were acquired from atmospheric water vapor, NIST SRM 2035 glass and a polystyrene reference mounted in the validation wheel of the instrument. The effects of resolution and beam path optics on line shapes were also evaluated.