Abstract: A multichannel pipetting plate comprises a plurality of connectors arranged in a lattice; wherein each connector is fluidically connectable to a pipetting tip; wherein each connector comprises an interface at which a friction contact between the connector and a foot of the pipetting tip is established; wherein the interfaces of the connectors are arranged in different planes, such that, at least at a border region of the pipetting plate, along each row and along each column of the lattice, at least three consecutive interfaces are arranged in at least two different planes.

Abstract: The invention relates to a drive device (100) for use in a laboratory device, having a stepping motor (10) having rotor and stator, and having a motor controller (20), which is designed for the purpose of activating the stepping motor (10). In one embodiment, the drive device (100) comprises an encoder (11), which supplies a respective current encoder signal (e(t)) in operation (ia, ib), which reflects the current rotor position of the rotor, and phase terminals (14, 27), to tap the currently flowing motor phase currents (ia, ib). The motor controller (20) comprises a transformation module (13), in order to decompose the currently flowing motor phase currents (ia, ib) using a transformation method into a slip component (ix) and a torque component (iy).

Abstract: The invention relates to a drive device (100) for use in a laboratory device, having a stepping motor (10) having rotor and stator, and having a motor controller (20), which is designed for the purpose of activating the stepping motor (10). In one embodiment, the drive device (100) comprises an encoder (11), which supplies a respective current encoder signal (e(t)) in operation (ia, ib), which reflects the current rotor position of the rotor, and phase terminals (14, 27), to tap the currently flowing motor phase currents (ia, ib). The motor controller (20) comprises a transformation module (13), in order to decompose the currently flowing motor phase currents (ia, ib) using a transformation method into a slip component (ix) and a torque component (iy).