Retsch MM 200 - Manual (Page 23)

5/21/2012 23 Retsch GmbH
Milling of materials which can cause a fire or explosion in
the MM 200 is prohibited.
Please take any necessary measures to prevent danger to
persons, depending on the dangerous nature of your
sample.
Please note that the properties, and therefore the
dangerous nature of your sample, can change during the
milling process.
Safety instructions for handling liquid nitrogen
When handling liquid nitrogen always wear protective
goggles and protective gloves.
Liquid nitrogen has a temperature of –196 °C and can
cause injury similar to burns or frostbite in contact with the
skin or eyes.
The protective goggles also protect the eyes against serious
injury through flying glass splinters resulting from bursting
of glass containers.
The MM 200 is also designed for cryogenic milling.
Please follow the safety regulations of the cooling
liquid supplier.
Retsch GmbH excludes any liability claims whatsoever
which may arise through the use of liquid nitrogen or
similar materials.