Automated liquid handling and computer controlled system and method for solid phase chromatographic extractions
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United States of America Patent
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Jun 2, 1998
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app pub date -
Jul 1, 1996
filing date -
Jan 31, 1994
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Abstract
A method and apparatus for solid phase extraction chromatography is disclosed in which the flow rate of a fluid, such as the motive pressurized gas is monitored, adjusted and compared with a standardized pressure curve which is correlative of a sample being processed. By monitoring and adjusting changes in flow rate, which can correspond to process initialization, beginning, ending and key fractionating points, and correlating to a standard, the cycle time for assaying the sample in question can be maximized and multiple samples can pass through analysis automatically and quickly.
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