Operating the machine
35
5.15.2 Stacking grinding jars smaller than 50ml
Fig. 24:
Grinding jars with a capacity of less than 50ml can be stacked on top of each other
directly without the use of accessories.
Stacking process:
•
Place the grinding jar (
M2
) directly on top of grinding jar (
M1
).
•
Clamp the grinding jars as described in the chapter
“Clamping the grinding
jars”.
5.16 Handling grinding jars
5.16.1 Carrying and gripping
Fig. 25: Grinding jar
The gripping flanges (
Gr
) on the grinding jar lid permit secure handling.
5.16.2 Anti-rotation device
All 250ml and 500ml grinding jars have a drilled hole underneath the grinding jar as
anti-rotation device. The anti-rotation device is only used with the PM400 and is
located on the side of the grinding jar casing with lettering.
5.16.3 Heating the grinding jars
Depending on the grinding time and the fill level, the grinding jars can be heated to
a temperature of up to 150°C during grinding.
This temperature change causes the pressure inside the grinding jar to increase.
When unscrewing the lid, please note that this excess pressure is released by a
sudden escape of air. This may be accompanied by particles of sample material.
Gr
Gr
M2
M1
Summary of Contents for PM400
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