Methods, rack and device for preparing samples for analysis
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United States of America Patent
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Nov 3, 2009
Grant Date -
May 11, 2006
app pub date -
Feb 2, 2004
filing date -
Feb 3, 2003
priority date (Note) -
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Abstract
In a solid phase extraction (SPE) device, once all the columns of the SPE plate are filled with liquid, the needles cooperate with engagement formations on a pusher element for pushing down the plate together with an upwardly biased shoe into sealing engagement with a peripheral spacer surrounding a container. Simultaneously, vacuum is applied by appropriate control of a valve and all the columns simultaneously transfer liquid into the drain container. Then, vacuum is released, needles engage recesses to move a carriage above a collect container and a similar prosecution is resumed.
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