FRITSCH PULVERISETTE 15 - Manual (Page 26)

6.3 Comminution procedure with the funnel for long and bulk solids
CAUTION!
Wear safety goggles for comminution using the funnel for
long and bulk solids!
There is a risk of particles from the funnel being projected,
in the case of free-flowing material.
1. Close the cutting mill.
2. Attach the collecting vessel.
3. Switch on the device.
4. Add some comminution material and pull the plunger slowly
upward. The material to be cut falls into the cutting chamber.
⇒An operating noise becomes audible.
The quantity of comminution material varies depending on the
particle feed size and the grindability of the comminution material.
It is best to start with small quantities and increase them
depending on the success of the comminution.
5. If necessary, press fibrous comminution material into the cutting
chamber with the plunger.
6. When the operating noise becomes quieter, the comminution pro-
cedure is complete.
ð More comminution material can be added.
6.3.1 Using the plunger
The plunger has two different sides for feeding the sample material in
the funnel for long and bulk solids into the grinding chamber. On the one
hand, the smooth, round side is suitable for finer material. On the other
hand, the cross-shaped, thinner side is suitable for long, fibrous material,
such as straw.
Using the device
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