Heraeus hollow cathode lamps are primarily used IN instruments for atomic absorption spectroscopy (AAS).Heraeus hollow cathode lamps are designed for optimal performance and characterized by good chemicalsensitivity and spectral response, combined with stable light output and low noise. Heraeus hollow cathode lamps are available both forums and as a replacement lamp by discerning users the world over. The range includes standard lampstand data-coded versions for PerkinElmer, Varian and Thermo Fisher atomic absorption spectrometers. Lamps for use with Smith-Hieftje background correction can also be offered. Hollow Cathode Lamps High Quality Lamps for all Instrument Brands Hollow cathode lamps consist of a cathode made from the element of interest, an anode and an inert filler gas contained in a glass envelope. In addition various micadiscs, ceramic sheaths and glass shields assist in alignment and insulation.