METHOD FOR DETERMINING THE POSITION OF A ROBOTIC ARM IN A LIQUID HANDLING SYSTEM, AND A CORRESPONDING LIQUID HANDLING SYSTEM

The present invention relates to a method for determining the position of a robotic arm in an automatic liquid handling system in which a measurement probe with a first electrode is arranged on the robotic arm and, together with a second electrode formed by at least part of a working area or at least part of a container or container carrier forms a measurement capacitor that is operatively connected to a measurement unit for measuring an impedance, in particular a capacitance of the measurement capacitor. The method involves moving the measurement probe along a first path, detecting a first change in the impedance, in particular in the capacitance of the measurement capacitor at a first point on the first path, and defining at least one first reference spatial coordinate for a control unit of the robotic arm on the basis of the first point on the first path. 14123114453116454231113. Method for position determination of a robot arm () in an automatic liquid handling system () comprising a substantially horizontally aligned worksurface () for the placement of containers () or container carriers () and at least one robot arm () having a drive , for example , a pipetting robot () having at least one pipette () for aspirating and/or dispensing liquid samples or a logistics robot having at least one gripper finger for moving the containers () or container carriers () , and a control unit () which is operationally connected to the robot arm () , wherein a measuring probe (′) having a first electrode is arranged on the robot arm () , which , together with a second electrode , which is formed by at least a part of the worksurface () or at least a part of the container () or container carrier () forms a measuring capacitor , which is operationally connected to a measuring unit () for measuring an impedance , in particular a capacitance (C) , of the measuring capacitor , wherein the method has the following steps:{'b': 5', '1', '2', '3', '11, 'a) moving the measuring probe (′) ...