FRITSCH PULVERISETTE 5/4 classic line - Manual (Page 51)

NOTICE!
The grinding parts made of agate are only designed for
temperatures of up to 100 °C. After this point, they need to
be slowly and carefully cooled down.
7.3 GTM - system
The GTM system is available as an accessory for recording pressure and
temperatures in the grinding bowl during grinding.
Instructions are included with the GTM system.
Accessories
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