| 主权项 |
1. A method for transferring a liquid volume from a first liquid vessel into a second liquid vessel, wherein a pipetting needle is used which is secured on an automatically displaceable or pivotable transfer arm and which has a fill-level sensor, said method comprising the steps:
(a) immersing the pipetting needle into the liquid contained in the first liquid vessel, and measuring the fill level; (b) comparing the measured fill level with a predefined minimum fill level and a predefined maximum fill level; (c) determining that the measured fill level
i. exceeds the predefined maximum fill level orii. is below the predefined maximum fill level and exceeds the predefined minimum fill level oriii. is below the predefined minimum fill level, (d) withdrawing the pipetting needle from the liquid, wherein: if determined that the measured fill level exceeds the predefined maximum fill level or is below the predefined minimum fill level, the pipetting needle is withdrawn from the liquid without sucking in a liquid volume, and then steps a) to d) are repeated until determined that the measured fill level is below the predefined maximum fill level and exceeds the predefined minimum fill level, and then, before the pipetting needle is withdrawn, the liquid volume to be transferred is sucked in and is thereafter transferred into the second liquid vessel. |
