Recommended number of grinding balls per grinding bowl for PULVERISETTE 5 / 6 classic line

Grinding bowl|500ml|250ml|80ml
Useful capacity (sample volume)|80 - 225ml|30 - 125ml|10 - 30ml
Ball diameter|||
5mm|2000|1200|250
10mm|100|50|25
15mm|70|45|10
20mm|25|15|5
30mm|8|6|-|
40mm|4|-|-|