Instrument

UV-Vis-NIR Spectrophotometer

UV-Vis-NIR Spectrophotometer


UV-Vis spectroscopy is a widely used technique which probing the electronic transitions of the molecules as they absorb UV and/or visible light. Absorption measurements can be at a single wavelength or over an extended spectral range. UV-Vis spectroscopy is applied mainly in a wide range of molecules or inorganic complexes in solution. The UV-Vis spectra have broad features that are of limited use for sample identification but are very useful for quantitative measurements by using the Beer-Lambert law. It can detect concentrations of molecular species less than 10 -7 M.

Characteristics

UV-Vis spectroscopy is a widely used technique which probing the electronic transitions of the molecules as they absorb UV and/or visible light. Absorption measurements can be at a single wavelength or over an extended spectral range. UV-Vis spectroscopy is applied mainly in a wide range of molecules or inorganic complexes in solution. The UV-Vis spectra have broad features that are of limited use for sample identification but are very useful for quantitative measurements by using the Beer-Lambert law. It can detect concentrations of molecular species less than 10 -7 M.

Services

Model: Hitachi U-3000 reverse optics spectrophotometer equipped with high temperature furnace (up to 750oC)
Spectral range: 190 – 1000 nm (±0.3nm)
Detector: Photomultiplier for UV/Vis
Model: Perkin Elmer Lamda 900 UV-Vis-NIR reverse optics spectrophotometer equipped with high temperature furnace (up to 1000oC)
Spectral range: 185-3300nm (±0.08nm UV/Vis range, ±0.32nm NIR range)
Detector: Photomultiplier for UV/Vis and Peltier-cooled PbS detector for NIR

Sample Properties

Liquid, gas
Minimum sample volume: 1-3ml
Minimum path length: 0,01cm
Maximum path length: 10-20cm