UV-Vis Spectra

UV-Vis spectroscopy (Ultraviolet-Visible) measures electronic transitions in molecules and ions as they absorb light in the 190–800 nm range. When a photon's energy matches the gap between electronic energy levels, absorption occurs — producing characteristic spectra that reveal information about conjugation, charge-transfer complexes, metal coordination, and chromophore structure.

Absorption spectroscopy in the UV-Vis range is fundamental to quantitative analysis through the Beer-Lambert law, making it the workhorse of clinical chemistry, environmental water testing, and pharmaceutical quality control. Electronic transitions captured in UV-Vis spectra also support studies in photochemistry, dye characterization, and materials science. Reference spectra enable method development and instrument validation.

SpectralBench provides UV-Vis reference spectra covering absorption and transmission measurements for minerals, volatile compounds, and other materials. View interactive spectra, examine wavelength-resolved data, and download in CSV or JCAMP-DX for use in calibration, method development, and spectral comparison.