Liquid delivery device and chemical analysis apparatus using liquid delivery device
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United States of America Patent
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Oct 24, 2017
Grant Date -
Feb 25, 2016
app pub date -
Jun 26, 2015
filing date -
Aug 25, 2014
priority date (Note) -
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Abstract
A chemical analysis apparatus includes a liquid delivery device and a liquid discharge unit discharging delivered liquids, the liquid delivery device including: a first liquid delivery unit delivering a first liquid containing an analysis object; a second liquid delivery unit delivering a second liquid not containing an analysis object; a measurement unit measuring physical properties of the delivered first liquid; first and second liquid pools containing the delivered first liquid and second liquid; and a plurality of passive valves. The apparatus further includes: a first flow passage connecting the first liquid delivery unit and the liquid delivery device; a second flow passage connecting the measurement unit and the second liquid pool; a third flow passage connecting the second liquid delivery unit and the liquid discharge unit; a first air hole provided in the first liquid pool; and a second air hole provided in the second liquid pool.
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