Description
NIR Spectrometer and Its Accessories
A Near-Infrared (NIR) Spectrometer is a fast, non-destructive analytical tool used for characterizing materials based on their interaction with near-infrared light (typically 780–2500 nm). It measures the overtones and combinations of molecular vibrations, particularly those involving C-H, N-H, and O-H bonds. These features make it especially suitable for organic materials and water-rich samples.
The NIR spectrometer is often used with various accessories to adapt it to different sample types and analysis modes. These include fiber optic probes for in-line measurements, integrating spheres for diffuse reflectance, sample cups for solids, and flow cells for liquids. The inclusion of temperature control units, calibration standards, and software for chemometric modeling further extends the capabilities of NIR systems.
Applications of NIR spectroscopy span across agriculture (moisture and nutrient content in grains), pharmaceuticals (tablet composition and uniformity), food processing (fat, sugar, and protein analysis), and polymers. It is particularly valued for its speed, ease of use, and ability to perform real-time, on-site quality control with minimal sample preparation. Calibration and multivariate data analysis enhance its precision and enable predictive modeling of unknown samples.
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