General Description - VWR Star-Beater Manual De Instrucciones

INSTRUCTION MANUAL

3. GENERAL DESCRIPTION

The Star-Beater is a laboratory machine, which is suitable for milling and homogenizing
soft, fibrous, hard and brittle materials in the dry and wet state.
It is used for fast, super fine milling of 2 samples simultaneously.
The closed milling system guarantees complete recovery of the samples. Owing to the
extremely short milling time and the high final fineness of the milled material, the Star-
Beater is also ideally suitable for sample preparation for all spectral analyses.
Final finenesses of down to 1 μm can be achieved, depending on the milling time and the
specific properties of the sample material. The optimum milling jar filling is as a rule 1/3 of
the milling jar volume.
Exceptions to this are voluminous materials, such as wool, leaves, grasses and suchlike.
In these cases a filling level of 70-80% is necessary.
The sample quantity should not be less than 25% of the milling jar volume.
The milling balls may otherwise damage the milling jars.
The milling jar materials and milling ball materials must always be identical or
compatible.
The milling balls may otherwise damage the milling jars.
EN 6
VWR Star-Beater