Equipment And Functional Principles; Basic Device - Sartorius Mikro-Dismembrator U Bedienungsanleitung

1.2

Equipment and Functional Principles

1.2.1 Basic Device

The Mikro-Dismembrator U can be operated with a
selectable shaking frequency for a definable time.
Continuous operation is also possible. An eccentric
wheel converts the rotation of the brushless drive into
reciprocation of the connector with the shaking
container
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The shaking amplitude is constant, i.e. 16 mm. The
shaking speed of the Mikro-Dismembrator U can be
adjusted in the range 50 ... 2.000
controlled. Therefore, the set value is kept constant even
during extended runs and with varying loads, ensuring
precise, reproducible experimental conditions.
The user can select short-term (timer mode) or
continuous operation.
•
The integrated timer permits adjustable operating times
in the range of 00:01 ... 98:59 [Min:Sec] continuous
operation is possible with time setting of 99:59
[Min:Sec].
For disintegration, the sample is filled into the shaking
flask together with the grinding balls and process
materials, if necessary. Due to the reciprocal movement
the components are accellerated and will bounce against
the inner wall of the flask and against each other. This
will disrupt the sample and, at the same time, provide a
homogeneous mixing of the sample.
The impact effect depends on the specific weight and
skin hardness of the grinding balls, for instance, and
changes with the material characteristics.
Increasing shaking frequency and higher specific weight
of the grinding ball both enhance the input.
The effectiveness of the disruption and homogenization
of the sample can be controlled by adding certain
process materials, such as quartz sand, chemical process
materials or dispersing agents. Dry samples, which are
treated without grinding balls, will be intensively mixed.
1
/min and is
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Fig. 1: Mikro-Dismembrator U
(1) Shaking flask
(2) Holder for flask and accessories
(3) Covering with connector
(4) Key pad
(5) Digital display
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