Flow rate control
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United States of America Patent
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Mar 18, 2014
Issued Date -
N/A
app pub date -
Nov 24, 2009
filing date -
May 20, 2003
priority date (Note) -
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Abstract
A liquid sample is prepared at a preparation site and then processed, e.g. in an HPLC column. The sample is prepared and conveyed to the device at a flow rate which is substantially less than the flow rate through the device. The different flow rates are preferably provided by variable rate working fluid supplies which drive the sample from the preparation site and through the device.
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