Equipment | Chemical Analysis |FT-NIR Fourier Transform Spectrometers

FT-NIR Fourier Transform Spectrometers

Fourier Transform Near Infrared or FT-NIR Spectrometers are used for checmical identification and analysis. They utilize the fact that the functional groups of every molecule generate a characteristic absorption or transmission spectrum that can be used to identify them like a fingerprint. They use interferometers to split the light source. These separate beams are then recombined to create an interferogram which is subjected to a Fourier Transform to produce a spectrum. They are also able to measure the entire spectrum simultaneously, providing rapid and sensitive data with low noise levels. They also feature internal calibration on every scan. FT-NIR spectra are not as intense as FT-IR spectra, but they often do not require sample preparation, making it faster and enabling it to be used as a form of non-destruive testing.

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