公开(公告)号：US20230408541A1

公开(公告)日：2023-12-21

申请号：US18336212

申请日：2023-06-16

Applicant: TECAN TRADING AG

Inventor： Oliver SCHILLING ,  Dominik MAURER ,  Christoph HAUSHERR

IPC: G01N35/10

CPC classification number: G01N35/1016 ,  G01N35/1011 ,  G01N2035/1025

Abstract: A method for aspirating a first liquid medium from a sample container with a laboratory automation device, wherein the first liquid medium is above a second liquid medium, which has a higher density and/or viscosity as the first liquid medium comprises: detecting a surface position of a surface of the first liquid medium; calculating an estimated interface position of an interface between the first liquid medium and the second liquid medium from the surface position and calculating a safety position between the surface position and the estimated interface position by adding a safety offset to the estimated interface position; and lowering a pipette of the laboratory automation device into the sample container and aspirating the first liquid medium from the sample container with the pipette by generating an underpressure in the pipette until a pipette tip of the pipette reaches the safety position.