A method for study on efficiency of the technological process of separation of hard-to-remove impurities from seeds includes removal of the impurities from components of an artificial mixture, calibration of the components, mixing, and passing the artificial mixture through an experimental installation, sampling fractions, selection of working samples, analysis of the working samples and determination of efficiency of cleaning process. The "impurity" component prior to mixing is processed by an aqueous fluorescent dye, and analysis of the working samples is carried out in light of an ultraviolet lamp.
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