Each subsequent shelf in the column strengthens the alcohol and purifies it. Thanks to this, a shelf column with 2-3 shelves makes it possible to obtain fruit, rye or whisky distillates in one rush. The use of more shelves makes it possible to obtain excellent spirits of up to 95% power. If the column is connected to a double-walled tank, dense settings and mash can be processed without fear of burning. In such a kolum it is easier to separate foreground and chase. Already using three shelves may make the distillates less aromatic and flattened.