Retsch RM 200 - Manual (Page 24)

11/6/2012 24  Retsch GmbH 0002
Working instructions
Target group: Laboratory assistant
General
The RM200 mills through pressure and friction. This
combination of two loading mechanisms enables both soft and
hard, brittle material to be crushed, milled and mixed in this
machine. Both dry and wet milling operations can be carried
out in the RM200.
Materials which are difficult to mill can be made brittle by
cooling, or can be prepared by mixing with milling auxiliary
agents. Please ask your Retsch contact for advice on this.
Observe the relevant regulations and guidelines of
your country for handling chemicals and hazardous
materials.
These should be applied when working with the
RM200.
You should also take into consideration the health protection
regulations concerned with the function of health-hazardous
dusts, e.g.
 BGR 217* „Handling mineral dust“
 BGI 504-1-1* and BGI 504-1-4* „Dust exposure
– industrial preventive medicine“
 BGR 120* „Directives for laboratories“
(* German federal laws)
Materials
The RM200 is suitable for dry and wet milling of materials of
all kinds, with the following possible properties:
 soft
 medium hard
 hard
 pasty or
 brittle.
The maximum hardness of the materials can be up to 9 on the
Mohs’ scale.
Milling of materials with a risk of fire or explosion in
the RM200 is prohibited.
Please take the necessary measures, depending on
the dangerousness of your sample, to avoid danger
to persons.