Method for aspirating sample liquid into a dispenser tip and thereafter ejecting droplets therethrough
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United States of America Patent
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Jun 27, 2000
Issued Date -
N/A
app pub date -
Jan 22, 1998
filing date -
May 31, 1996
priority date (Note) -
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Abstract
A low volume liquid handling system is described which includes a microdispenser employing a piezoelectric transducer attached to a glass capillary, a positive displacement pump for priming and aspirating liquid into the microdispenser, controlling the pressure of the liquid system, and washing the microdispenser between liquid transfers, and a pressure sensor to measure the liquid system pressure and produce a corresponding electrical signal. The pressure signal is used to verify and quantify the microvolume dispensed and is used to perform automated calibration and diagnostics on the microdispenser.
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