Rotary valve for sample handling in fluid analysis
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United States of America Patent
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Issued Date -
Jun 14, 2012
app pub date -
Dec 13, 2010
filing date -
Dec 13, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Efficiency of fluid analysis can be improved by utilizing a rotary valve capable of sequentially coupling 3 or more buffer chambers to 3 or more tasks. Such a rotary valve can be provided using a rotor having connections that geometrically form parallel chords of a circle. During analysis, such a valve can provide for parallel processing of several tasks and buffers. For example, one buffer chamber can be connected to a cleaning/evacuation port, another buffer chamber can be connected to a sample input port, and a third buffer chamber can be connected to an analytical instrument. Stepping the valve through its various positions can simultaneously move each of the buffer chambers to the next step in an analysis process.
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