IMPROVED METHOD AND APPARATUS FOR PIPETTING LIQUIDS

摘要

An improved method for pipetting multiple aliquots of liquid employs a preliminary backsip prior the first expression of an aliquot of the liquid; an adjustable backsip 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 a retained volume of liquid after the expression of the last measured aliquot. The improved method for pipetting liquid may be performed on an improved apparatus which includes a computer or microprocessor having within its memory a schedule or correlation for the optimal backsip to execute after the expression of any given aliquot. The computer or microprocessor may also include means for driving the apparatus so as to perform the preliminary backsip and the aspiration of the blow out volume.