How it works
ISM separates grain in the airflow.
Initial grain cleaning and sorting is performed due to differences of grains weight and windage properties.
Heavy impurities, like stones, are separated into the first tray.
Seeds of the highest sowing quality (the most viable, with the highest germination capacity) are directed into the second and third trays.
Commodity grain is directed into the forth and fifth trays.
The sixth and seven trays are collecting feed (forage) grain.
The dust, chaff and other light impurities are blown out with the airflow (aspiration).