[en] The proportion of the useful component is a major factor that influences the quality of an industrial raw material. In this work an experimental two-channel analyzer is described that provides rapid analysis of powders with minimum error. The specimen is irradiated by two sources, one of which excites x-ray fluorescence for the relevant element and the other causes coherent scattering. The purpose is attained by adding a polycrystalline material with high reflectivity and recording the diffraction-line intensity. The two-channel form of measurement has been used for the quantitative determination of Mn, Fe, Cr, Cu, and Mo in ores and dressing products. The material in the radioisotope channel was irradiated by a ¹⁰⁹Cd source. The count rates were determined at the peak of the Kα₁α₂ for the elements. 2 figs., 1 tab