They generate a continuous spectrum with wavelengths ranging from UV to visible light, making them the ideal light source for high-precision absorption measurements in the laboratory.
HPLC is based on a separation method in which the substance to be examined is pumped through a so-called separating column at high pressure. Due to the different kinds of interaction of the substances with the materials in the separating column, the individual substances exit the column at different times, which enables separation of the fractions.The substance, which is now broken up into its individual constituents, can be detected by a UV/VIS detector that measures absorption in the UV range.
To enable lowest possible detection limits and highest resolution in modern analysers, the latest generation of Heraeus deuterium lamps provides about 50% higher intensity, with two to three times lower noise compared to conventional deuterium lamps.
This makes them ideal for use in UHPLC (ultra-high performance liquid chromatography) detectors which are used, for example, in blood tests to find drugs.