Extracting apparatus
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United States of America Patent
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Apr 8, 2008
Grant Date -
Mar 3, 2005
app pub date -
Aug 18, 2004
filing date -
Aug 19, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A mechanism for introducing pressurized air into an extracting cartridge comprises an air pump, an on-off valve, and a pressure sensor for detecting an internal pressure within the extracting cartridge. The on-off valve is turned on in order to introduce the pressurized air into the extracting cartridge. When the internal pressure detected by the pressure sensor has become equal to a predetermined pressure range for a pressurization upper limit, the on-off valve is turned off in order to confine the area within the extracting cartridge in the pressurized state, the pressure being thereby exerted upon a sample liquid, a washing liquid, or a recovery liquid having been injected into the extracting cartridge.
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