Sample has been fed and ground with 20 seconds. Afterwards, sieve ring and impact rotor remains free of residues. A grinding of higher amounts is possible.
Cleaning can been performed rapidly by vacuuming with a soft brush.
Usually, majority of ground particles will show a fineness which is smaller than the half of the size of the trapezoidal openings. With a sieve ring with 200 µm trapezoidal perforation, a d50 < 100 µm is expected to be found.