FIELD: physico-chemical purification of substances. SUBSTANCE: method involves local radiation of films or plates with fluxes of high-energy particles, subsequent shrinking of films or plates and pickling. Shrinking may be conducted after pickling by thermomechanical or chemical treatment, by vacuum drying or by exposure to fluxes of super-high frequency, optical radiation or particle flux. Radiation may be effected through stencils. EFFECT: higher efficiency. 8 cl, 1 dwg
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