Particle detection
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United States of America Patent
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Nov 20, 2007
Grant Date -
Jul 27, 2006
app pub date -
Sep 3, 2004
filing date -
Sep 5, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Particle detection and characterizing apparatus has an insulating tube along which the particles flow. Five electrodes spaced along the outside of the tube are connected via amplifiers to a processor arranged to measure the charge on the particles. The apparatus also includes a laser and photomultiplier tube arranged to measure the size of the particles so that the nature of the particles can be characterized from their electrical charge and size.
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