Centrifugal fluid analyzer rotor
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United States of America Patent
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Jul 16, 2013
Grant Date -
Sep 10, 2009
app pub date -
Jan 16, 2009
filing date -
Feb 4, 2008
priority date (Note) -
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Abstract
This invention provides rotors and methods of precisely metering a sample fluid and mixing the sample with a reagent. The rotors have a metering tube of defined volume that fills until sample flow is stopped by surface tension of a meniscus at a capillarity port, while excess sample is stripped from the metering tube inlet by centripetal force of the spinning rotor. By spinning the rotor at a higher speed, a reagent can be forced from a reagent chamber to contact the meniscus, breaking the surface tension and allowing the metered sample to mix with the reagent.
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