Overlapping photoelectron lines and Auger features are a common problem in analysis of complex materials.  The standard approach of switching to an achromatic Mg X-ray source is sometimes undesirable due to the introduction of X-ray satellites into the spectrum.  In this example we show how Kratos’ automatic monochromatic Ag Lα X-ray source may be used to excite a satellite free spectrum and allow unambiguous determine the oxidation state of a Ni/Co/Mn alloy.