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For problematic thermoplastic samples, it might be beneficial to grind in steps. With our first trial, we used a 0,5 mm sieve ring for precutting. Afterwards, the sample can be ground with the desired 0,2 mm sieve ring.
We recommend using the accessories for grinding large quantities if samples amounts > 50 g should be ground. It is also possible to grind batch wise instead of using the accessories for grinding large quantities.
Previously, sample has been placed into liquid nitrogen for embrittlement. After a minute of chilling, sample has been fed spoon by spoon to the feeding funnel.
This way, it took about 4 minutes to grind the entire sample amount.
Only a bit of sample use to stick to the impact rotor or the sieve ring. Even higher amounts of sample can be ground this way.
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