Handling of food, pharmaceutical and cosmetic products
Analysed products
Food, pharmaceutical and cosmetic products, which were analysed with
the device must not be consumed, used or circulated.
• Dispose these substances in accordance with the applicable
regulations.
Range of application of the device
Long-term operation
This laboratory device is designed for eight-hour single-shift operation
with a duty cycle of 30 %.
• This device may not be used as a production machine nor is it
intended for continuous operation.
6.2 Principle of Operation
The AS 200 control performs a vibratory sieving, where the sample material is thrown upwards
by the vibrations of the sieve bottom and subsequently falls back down onto the sieve mesh
fabric due to gravitation forces. Thereby, the sample material is subjected to a three-
dimensional movement, i.e. a horizontal circular motion superimposes the vertical throwing
motion. Hence, the sample material is spread uniformly across the entire surface of the sieve
bottom, whereas the particles are subjected to an acceleration in vertical direction. In this
process, they perform free rotations and are compared with the mesh sizes when falling back
down statistically orientated. In the Vibratory Sieve Shaker of the Retsch GmbH, an
electromagnetic drive sets a spring-mass system in motion and transfers the oscillations to the
sieve stack. The amplitude can be adjusted within a few millimetres.
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