Fritsch ANALYSETTE 3 - Parameters; Grinding with Liquid Nitrogen

There is a risk of the grinding ball destroying the lid. The grinding stock
c
an be added to the mortar bowl either dry or in suspension.
CAUTION!
Do not allo
w any liquids to ow into the device.
To reduce the grinding noise, we recommend using a
sound absorpon hood (order no. 00.0130.17).
7.5.1.2 Parameters
Grinding duraon 10 ... 30 min (average)
Amplitude 1 ... 2 mm (max.)
Feed quanty
Max. 10 ml
(parcle feed size ≤ 5
mm)
7.5.1.3 Grinding with liquid nitrogen
CAUTION!
Only use grinding v
essels and grinding balls made of
stainless steel, tungsten carbide or zirconium oxide for
grinding with liquid nitrogen.
The device for grinding in liquid nitrogen (no. 00.2000.00) should be used
to embrile the grinding stock in liquid nitrogen. In this thermally-insu-
lated cryo-box, the grinding vessel and the grinding ball can be cooled
down considerably, and only small amounts of liquid nitrogen must be
relled during grinding.
CAUTION!
When handling liquid nitr
ogen, the Guidelines for Labo-
ratories, BGR 120, in parcular Chapter 5.4.6, must be
observed as well as the other relevant guidelines and
codes of pracce.
Suitable protecve clothing, parcularly safety goggles
and heat-resistant gloves must be worn. Only the
smallest possible amounts should be handled. Make
sure that the laboratory is adequately venlated.
Accessories
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