FRITSCH PULVERISETTE 14 - Manual (Page 8)

The PULVERISETTE 14 allows the fast comminution of soft to medium-
hard samples, such as:
Plants Wood Roots Leaves Needles Spices
Drugs Dragées Pills Textiles Leather
Chemicals Fertilizer Food Grains Feed pellets Plastics
Pulp Filler Chalk Kaolin Coal
After embrittlement with liquid nitrogen:
Synthetic resins Foils Plastics (PVC, PP, PE)
The extremely high-speed PULVERISETTE 14 enables the comminution of
temperature-sensitive ductile or plastic samples. Even slightly greasy or
moist samples can be ground by "freezing" without embrittlement. By
simultaneously adding liquid nitrogen, samples that are extremely diffi-
cult-to-mill, such as soft PVC foils, can be made fine enough for analysis.
For iron-free grinding, the rotor and sieve used are made of titanium.
The inside of the mill, typically made of chrome-nickel stainless steel, has
been suitably coated with a relatively abrasion-resistant PTFE layer. The
grinding insert made of pure titanium is only for use with "soft mate-
rials". Hard substances destroy the sieve ring and drastically reduce the
service life of the rotor.
Safety information and use
- 8 -