Guided Wave Incorporated

Near-IR (NIR) is a spectroscopic method based upon the absorption of light in the wavelength region between 700 nm and 2,500 nm due to vibrations of molecular functional groups in the sample.

These spectral features arise from overtones and combinations of the fundamental molecular vibrations of these groups that occur in the infrared (IR) at longer wavelengths. NIR is rich with features arising from vibrations of C-H, O-H and N-H (1).

Guided Wave Incorporated (2013) Near IR Spectroscopy in Process Analysis

Guided Wave Incorporated (2013) Near IR Spectroscopy in Process Analysis
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