6.5.2 Filling the grinding jar
Fill the grinding bowl as follows:
Place grinding balls of a suitable material and the right number in the grinding jar.
Add sample for grinding to the grinding balls in the grinding chamber.
NOTE When filling the grinding jar, make sure that the volume does not fall below 1/4 of the
total volume of the grinding jar. The optimum filling quantity of the grinding jar consists of 1/3
sample and 1/3 grinding balls, which corresponds to 2/3 of the total volume.
Fig. 14: Grinding jar filling
6.5.3 Closing the grinding jar
Close the grinding jar as follows:
Insert the grinding jar seal into the grinding jar lid. Make sure that all contact surfaces
touching the seal are clean.
Check that the thread is free from foreign objects and clean where necessary.
Screw the grinding jar lid tightly onto the grinding jar.
NOTE If necessary, use the opening aid to seal the grinding jars tightly.
Dry grinding with
fibrous sample
material
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