Method and apparatus for pipetting liquids
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United States of America Patent
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Nov 6, 1990
Grant Date -
N/A
app pub date -
Apr 29, 1988
filing date -
Apr 29, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method for pipetting multiple aliquots of liquid employs a preliminary back sip prior the first expression of an aliquot of the liquid; an adjustable back sip between each expression of aliquots of liquid; and a blow out volume of air, aspirated into the pipette prior to the initial aspiration of liquid, for blowing out residual liquid after the expression of the last aliquot of liquid. The improved method for pipetting liquid may be performed on an improve apparatus which includes a microprocessor having within its memory a schedule or correlation for the optimal back sip to execute after the expression of any given aliquot. The microprocessor may also include means for driving the apparatus so as to perform the preliminary back sip and the aspiration of the blow out volume.
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