NIR wavelength ranges in practice
You will see NIR described with slightly different lower limits depending on the context and instrument design.
For general NIR spectroscopy, PAS defines the near-infrared region used for identification as about 350 to 2500 nm.
For many portable NIR analysers, the emitted near-infrared radiation is described as typically 750 to 2500 nm, which reflects common analyser configurations and application needs.
If you are comparing devices or planning a method, use the analyser’s stated wavelength coverage to confirm it captures the spectral features needed for your target materials.
Choosing the right NIR analyser for your wavelength needs
Start with the PAS overview of Near-Infrared Spectroscopy (NIR) technology, then review the portable NIR analyser range to match wavelength coverage to your application. If you want help selecting a suitable option, you can get in touch with Portable Analytical Solutions.