UV/VIS/NIR spectroscopy is a powerful analytical technique to determine the optical properties (transmittance, reflectance and absorbance) of liquids and solids. It can be applied to characterize semiconductor materials, coatings, glass and many other research and manufacturing materials. UV/VIS/NIR operates in the optical range between 175 nm to 3300 nm.
UV/VIS/NIR spectroscopy is generally used to determine analyte concentrations or the chemical conversion of a component in solution. The technique measures the absorption of light across the desired optical range. A sample is dispensed into a cuvette and placed in the path between the optical light source and a detector. According to the Beer-Lambert law, with a constant light path length and known absorption coefficient (dependent upon wavelength), the concentration of a compound in question can be determined from the light absorbed at that wavelength.
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