FRITSCH PULVERISETTE 7 classic line - Manual (Page 32)

NOTICE!
If the filling quantity is lower than the specified minimum,
this will result in increased wear due to abrasion! This can
cause irreparable damage to the mill components.
Grinding bowl Min. sample volumes Max. sample volumes
45 ml 3 ml 20 ml
12 ml 0.5 ml 5 ml
6.3 Filling the grinding bowl
Do not fail to comply with the following sequence:
1.
Place the grinding balls in the empty bowl.
2. Fill grinding stock onto the balls.
3. Place the sealing ring on the rim of the grinding bowl.
NOTICE!
Make sure the sealing surfaces are clean!
4. Place the lid on the grinding bowl.
6.4 Factors with an impact on grinding
6.4.1 Running time (grinding duration)
A longer grinding duration will increase the percentage of fine material.
To reduce the running time, you can use a grinding bowl and grinding
balls with a higher density, and thus a higher impact energy.
6.4.2 Speed
Higher speeds shorten the grinding time and increase the percentage of
fine particles.
Using the device
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