The analysis of copper alloys is a classical case for X-ray fluorescence as an analytical technique. For many years, large wavelength dispersive X-ray spectroraeters have been used in process control associated with the manufacture of brasses, bronzes and coinage alloys. For the last two to three years, a new, benchtop WDX multichannel spectrometer, the Chem-X, has been successfully introduced for the same purpose.