Pipette tip for an automated pipetting device and production method thereof

    公开(公告)号:US11298695B2

    公开(公告)日:2022-04-12

    申请号:US16309325

    申请日:2017-07-19

    Inventor: Philipp Ott

    Abstract: The present invention relates to pipette tips for connecting to a pipette tube of a pipetting device that is used for taking up and dispensing fluids. A pipette tip is shaped as a long tube that forms a pipette body with an opening on one of its ends and the other end is designed to connect to the pipette tube. The pipette tip is characterised in that it has an electrode as a volume measuring electrode of a measuring capacitor. The present invention further relates to pipetting devices with a pipette tip, methods for determining the volume of a fluid sample in such a pipette tip, methods for recognising such a pipette tip on a pipetting device, methods for producing such a pipette tip, uses for such a pipette tip and a set of pipette tips.

    Displacement device and method for displacing fluid volumes

    公开(公告)号:US12070743B2

    公开(公告)日:2024-08-27

    申请号:US17626385

    申请日:2020-07-29

    CPC classification number: B01L3/0231 B01L2200/02 B01L2400/0478

    Abstract: A displacement device for displacing a displacement volume is disclosed. The device has a first fluid space and a second fluid space. A first piston is arranged in a movable manner within the first fluid space. The first fluid space is connectable to a pipetting device. The first piston is actuatable by an actuation volume of air or of liquid provided by the pipetting device. A second piston is arranged in a movable manner within the second fluid space. The second piston is constructed to displace a displacement volume of a fluid located within the second fluid space when the second piston is actuated. The second piston is actuated in dependence on the first piston that is actuated by the actuation volume. The actuation volume is different from the displacement volume, and a pipetting system has a displacement device and a method of displacing a displacement volume.

    Pipetting apparatus with a pipette tube and method for detecting a liquid within an intermediate section of a pipette tube

    公开(公告)号:US11471876B2

    公开(公告)日:2022-10-18

    申请号:US16954793

    申请日:2018-12-17

    Abstract: A pipetting apparatus and method capable of detecting a liquid within an intermediate section of a pipette tube of the pipetting apparatus. The intermediate section is located between an upper section of the pipette tube at which a first electrode is arranged and a lower section at which a second electrode is arranged. The first and second electrodes form a measurement capacitor and are operationally connected to an impedance measurement unit, which is adapted to detect whether liquid, such as a portion of a sample liquid or system liquid, is present within the intermediate section based on the measured impedance or change of impedance, e.g. an increase of the capacitance and/or a decrease of the resistance, of the measurement capacitor caused by a presence of the liquid within the intermediate section.

    Pipette tip for an automated pipetting device

    公开(公告)号:US11291988B2

    公开(公告)日:2022-04-05

    申请号:US16308783

    申请日:2017-07-21

    Abstract: The invention concerns pipette tips for connecting to a pipette tube of a pipetting device are used for taking up and discharging fluids. The pipette tip is in the shape of an elongated tube forming a pipette body that has an opening at one end and is designed for connecting to the pipette tube at the other end. The pipette tip has a first electrode as a volume measuring electrode of a measuring capacitor and a second electrode as an immersion detector electrode. The first electrode is located on an outer surface of the pipette body or is embedded in the pipette body, and the second electrode is located at least partially on an inner surface of the pipette body.

    Pipetting device having a pipette tip detection unit and method for detecting a pipette tip on a pipetting device

    公开(公告)号:US10981162B2

    公开(公告)日:2021-04-20

    申请号:US16309067

    申请日:2017-07-19

    Abstract: The invention relates to a pipetting device having an exchangeable pipette tip for suctioning and discharging fluid volumes for use in automated laboratory systems. The invention relates to a pipetting device having a pipette tip detection unit and for detecting a pipette tip on a pipette device of this type. A detection unit detects whether a pipette tip is connected to the pipette tube or determines a characteristic feature of the connected pipette tip. The pipette tip forms at least one portion of a first electrode when the pipette tip is in electrical operative contact with the pipette tube and, e.g., a pipette tip holder, a contact for setting down the pipette tip holder or a working table over which the pipette tube can be moved forms at least one portion of a second electrode.

    Devices and methods for capacitive foam detection in liquid containers

    公开(公告)号:US11360040B2

    公开(公告)日:2022-06-14

    申请号:US17258370

    申请日:2019-07-09

    Inventor: Philipp Ott

    Abstract: Devices and corresponding methods for capacitive foam detection in liquid containers are disclosed. The device has a sensor with a measurement electrode having a plurality of sub-electrodes, a bottom plate that is used as a counter electrode for arranging a liquid container, a sensor electronic unit that is connected to the measurement electrode and the bottom plate and is adapted to determine an impedance, in particular a capacitance, between the measurement electrode and the bottom plate, and an evaluation unit, the measurement electrode being arranged substantially perpendicularly to the bottom plate.

    COMBINABLE CAVITY TRAY, ASSEMBLY OF COMBINABLE CAVITY TRAYS, METHOD OF MANUFACTURING AND USE OF A COMBINABLE CAVITY TRAY

    公开(公告)号:US20210178400A1

    公开(公告)日:2021-06-17

    申请号:US17113700

    申请日:2020-12-07

    Abstract: A combinable cavity tray for liquid handling is provided. The combinable cavity tray has at least one cavity for receiving a fluid and at least one passage for leading through a cavity of a second combinable cavity tray and/or for connecting to a pipetting apparatus. The at least one cavity of the combinable cavity tray is formed integrally. An assembly of combinable cavity trays having at least two combinable cavity trays, a method of manufacturing a combinable cavity tray and the use of a combinable cavity tray or of an assembly of combinable cavity trays for liquid handling are provided.

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