Pressed and Dried Food Pellet

Only a small amount of sample was provided. With only 28 grams, we can only perform one trial with the desired Universal Cutting Mill PULVERISETTE 19. The required grinding time for the desired 200 grams of sample cannot be estimated (grinding times will become significantly longer when the grinding chamber is not filled properly)

We used the high-speed version with 300-3000 rpm and adjusted the maximum speed for fine grinding results. A sieve cassette with 0,25 mm trapezoidal perforations was used. Because the gap of rotor knives and fixed knives of the housing is about 250 µm, we estimate a longer grinding time until the sample could pass the trapezoidal perforations.

For finest grinding results, also a Variable Speed Rotor Mill PULVERISETTE 14 premium line can be converted into a cutting mill. For this tool, surely a pre-crushing of sample would be required.

We fed the complete sample of 28 grams within a short time. The grinding sound vanished slowly and after 30 seconds of grinding, only a minimal grinding sound remained.

We stopped the mill after a total grinding time of 60 seconds and checked the grinding chamber. A small amount of loose sample remained on top of the sieve cassette. There was no significant clogging of trapezoidal perforations found; surely higher amounts could be ground this way.

Cleaning was performed rapidly by vacuuming with a soft brush.