PET Preform

Output: 38,2 g

To prevent the fine mesh of the 0,5 mm sieve cassette from damages, we recommend pre crushing the sample. We pre crushed the sample with the PULVERISETTE 19 without using a sieve cassette. Possibly the rotor can block this way, a band saw should be prevered.

Even with the additional cyclone separator, sample was found electrical charged in the grinding chamber. Sample does not use to block the sieve cassette. A grinding of higher amounts is possible. The rotor was warming up moderately.

We recommend the sieve cassette with 0,5mm trapezoidal perforation or bigger to achieve a higher output.

Output: 10,4 g

To prevent the fine mesh of the 0,25 mm sieve cassette from damages, we recommend pre crushing the sample. We pre crushed the sample with the PULVERISETTE 19 without using a sieve cassette. Possibly the rotor can block this way, a band saw should be prevered.

Sample does not use to block the sieve cassette. The temperature of the rotor rose constantly up to 50°C after 9 minutes. A high amount of ground sample remains in the grinding chamber (electrical charged sample).

By the heating of sample and the low output we found, we would not recommend grinding this kind of sample with a 0,25 mm sieve cassette.

Output: 29,7 g

To prevent the fine mesh of the 0,25 mm sieve cassette from damages, we recommend pre crushing the sample. We pre crushed the sample with the PULVERISETTE 19 without using a sieve cassette. Possibly the rotor can block this way, a band saw should be prevered.

A slow feeding rate should be used. Else, the machine can become overloaded (else, a safety switch will turn off the machine).

By the high amount of residue inside the grinding chamber, the usage of a 0,25 mm sieve cassette is not recommended with the cyclone separator. We propose using the 0,5 mm sieve cassette instead (see result 1).