PMMA-Sample

A lot of plastic samples are easy comminuted by cutting. For such samples, often our Universal Cutting Mill PULVERISETTE 19 is used to grind higher amounts. With different rotors and various sieve cassettes (from 0,2 mm – up to 10 mm) and plenty of additional accessories, such a mill could be adapted to many different tasks.

For small quantities, the new Mini-Cutting Mill PULVERISETTE 29 was invented (serial models will be launched soon). The available surfaces in the grinding chamber are lower and the rotor can spin up to 6.000 rpm which is beneficial to achieve finer and faster grinding results.

We prepared a batch of 2,1 grams and equipped the PULVERISETTE 29 with a sieve insert with 2 mm square perforations. The speed of the mill was set to 6000 rpm and the sample was fed into the mill. The grinding sound was typical and after 15 seconds, no further sound of grinding was recognized.

The mill was stopped and the grinding chamber was inspected. Inside the actual grinding chamber, only minimal residues were present. Below the sieve insert (on top of the protecting grit), a higher amount of electrostatic charged sample was left.

The cleaning of the grinding chamber was performed rapidly by vacuuming with a soft brush. Finally, we used compressed air to blow off last traces of the ground sample. For an intensive cleaning, the rotor could be taken out with a small captive screw (non-losable). The 4 counter knives can be pulled out of the grinding chamber with a tiny hook.