Page 7 - General Brochure EN

Heraeus hollow cathode lamps are available both for OEMs and as a replacement lamp by discerning users the world over. The range includes standard lamps and data-coded versions for PerkinElmer and ThermoFisher atomic absorption spectrometers. Lamps for use with Smith-Hieftje background correction can also be offered.
Single-Element Lamps
The Heraeus catalogue includes 70 single-element lamps in standard 37 mm (11⁄2 inch) and 50 mm (2 inch) diameters to fit almost any AA instrument. All cathode materials are selected from the highest purity available – usually 99.99% or better – to ensure high spectral line intensity, stability and low noise with good analytical sensitivity. The window material is selected to achieve the optimum transmission of the primary spectral lines
of the cathode element. Borosilicate glass is used for wavelengths over 350 nm, and high quality quartz for shorter wavelengths.
Multi-Element Lamps
Heraeus manufactures the largest range of multielement lamps offering only those combinations which provide sufficient energy and an acceptable lifetime for each element with no spectral interference. Multielement hollow cathode lamps are available with two to seven different element combinations. These are particularly useful for carrying out routine analysis on a number of different elements in the same sample, such as alloys.
See-Through Hollow Cathode Lamps
Heraeus also manufactures optogalvanic (See-through) hollow cathode lamps, designed to act as a frequency stable reference for high intensity tuneable monochroma- tic light sources, particularly lasers. Most of the cathode materials used in standard Heraeus hollow cathode lamps may be used in the “see through” design.
Hollow Cathode Hollow Cathode Hollow Cathode Lamp 37 mm Lamp 37 mm Lamp 50 mm
See-Trough
Hollow Cathode Lamp
7