FIELD: finding of mole content of metals in heterobimetal compounds. ^ SUBSTANCE: mole content of metals is found by X-ray fluorescent method which includes preparation of compared samples which have tested metals in known mole content. Intensity of fluorescence of any tested metal in compared samples is measured and graduation curve is built. Intensity of fluorescence of any metal is tested sample is measured and mole content of metals is determined from graduation curve. For measurement of intensity of fluorescence the absorbing layer of sample is used which layer has thickness of 250 micrometer maximum. ^ EFFECT: ability f conducting nondestructive inspection. ^ 3 dwg