| 摘要 |
<p>The invention relates to a method for determining a quantity of a dosing liquid aspirated through a dosing opening of a pipette tip into a holding volume of the pipette tip and/or dispensed from the holding volume of the pipette tip, wherein the method comprises the following steps: providing at least one reference variable (61, 63, 65) of at least one reference form of vibration; exciting a mode of vibration of at least one vibration section of the pipette tip; detecting at least one variable of the excited mode of vibration of the vibration section; and comparing the at least one detected variable of the excited mode of vibration to the at least one reference variable (61, 63, 65) of the reference mode of vibration. The method is a control method in which providing the at least one reference variable (61, 63, 65) comprises the following step: determining the at least one reference variable (61, 63, 65) such that it represents a desired target dosing liquid quantity which, at the time of determination, deviates from an actual dosing liquid quantity present in the holding volume, wherein the steps of exciting the mode of vibration, detecting the at least one excited variable and comparing the same to the at least one reference variable (61, 63, 65) are iteratively repeated during an aspiration of dosing liquid with the pipetting opening immersed in dosing liquid, or during a dispensation of dosing liquid, until the at least one detected variable is concordant with the at least one reference variable (61, 63, 65).</p> |
