Nondispersive instruments:

As an electrodeless discharge lamp or hollow cathode lamp are employed as sources within atomic fluorescence spectrometers, in principle there is no requirement for a monochromator. This is so since the radiation emitted through the source is of a single element and would thus excite only the atoms of that element. Thus nondispersive instruments could be assembled using a source, an atomiser and a detector. Like instruments have benefits of simplicity, low cost, adaptability to multielement analysis and high sensitivity, etc. Therefore, these instruments could prove meaningful only if the possible interferences are taken care of.