The most important condition for obtaining high-quality soybeans is strict compliance with the technological requirements for each individual operation. Compliance with these requirements is possible only with the organization of on-farm quality control of soybeans during post-harvest processing. One of the ways to intensify the soybean aspiration process is the use of a grate with inclined holes in the aspiration zone and a selected fan to carry out the purification process from light and heavy impurities.