|Geology / mineralogy|
|d50 < 300nm|
|We recommend using the Planetary Micro Mill PULVERISETTE 7 premium line for grinding your sample.|
main disk speed: 1100 rpm
80 ml grinding bowl made of zirconium oxide (ZrO2)
+ 100g of 1,5 mm Ø ZrO2 grinding balls
||< 60 µm|
||+ 40ml water|
||d50 < 0,29 µm|
40ml of water has been added to prepare motor oil like viscosity for best grinding results.
To avoid overpressure, we ground the sample in steps of 3 minutes, followed by a programmed pausing time of 10 minutes. After several cycles, the outside temperature of the bowl should be checked (remain below 80°C); grinding time or programmed pausing time might be readjusted afterwards.
It is still possible to increase the grinding time or to change to smaller ball diameters (e.g. to 0,1mm Ø) for a better endfineness.