Deuterium detector lamps deliver an almost continuous spectrum of light from the UV wavelength range (185-400 nm) to the visible spectral range (400-800 nm). They are mainly used as an ultraviolet light source for analysis purposes, such as in UV-visible spectroscopy or high pressure liquid chromatography (HPLC).
Ultraviolet and visible light (UV / VIS) excite electrons. For organic substances only unsaturated systems can be excited by UV / VIS spectroscopy. The UV / VIS spectroscopy is therefore a method for the detection of unsaturated organic substances. A detailed analysis of the UV / VIS spectra provides information about the bonds in the molecule and is very fast very demanding.