Dispensing – Automatic control – By weight – volume or pressure of a second dispensed material
Patent
1998-06-12
1999-07-27
Huson, Gregory L.
Dispensing
Automatic control
By weight, volume or pressure of a second dispensed material
222333, 422100, 436180, B67D 508
Patent
active
059275472
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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Chibucos Nicholas S.
Meyer Wilhelm
Papen Roeland F.
Pelc Richard E.
Huson Gregory L.
Packard Instrument Company
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