Process for concentrating specimens by evaporation of the solvent with a centrifugal evaporator-concentrator
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United States of America Patent
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Jan 28, 1992
Grant Date -
N/A
app pub date -
Mar 12, 1990
filing date -
Mar 20, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The centrifugal evaporator-concentrator comprises a central tubular pivot (18) surmounted by a nozzle (35) and constituting the pivot axis of a rotor (9) rotating in a vessel (8) closed by a cover (11). With the rotor rotating in the partial vacuum created by a vacuum pump (33), a small quantity of gas or air is temporarily and periodically admitted into the vessel, this gas being heated by a heating resistor (38) inside the vessel for the purpose of heating by conduction the specimens to be concentrated and of accelerating the rate of evaporation.
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