This invention relates to methods, systems, and computer program products for verifying dispensing of a fluid from a pipette.

A pipetting apparatus for aspirating and dispensing liquids having a pipetting unit with an interchangeable vessel that receives a liquid to be transferred, a holder for the pipetting unit, a positioning device for the pipetting unit, a micrometering unit, and an electronic control device. The micrometering unit is embodied separately from the pipetting unit and has a separate electronic control unit. The pipetting unit has a coupling device and the micrometering unit has a counterpart coupling device that matches the coupling device for the purpose of coupling. Coupling device and/or counterpart coupling device is/are switchable. The holder or the micrometering unit has a contact device with at least one electrical contact element and the micrometering unit or the holder has a counterpart contact device, matching the contact device, with at least one counterpart electrical contact element for making electrical contact with the contact element.

A pipette with an adjustable dosing increment, wherein a control apparatus determines a dosing volume by a set dosing increment when a syringe is inserted in the pipette, and determines a maximum possible number of dosing steps following an execution of a reverse stroke without refilling the syringe given the set dosing increment and completely or partially filled syringe by the position of a displacement means on the path, and displays the maximum number of dosing steps on a display apparatus until the reverse stroke is executed. The control apparatus also determines the number of executed dosing steps and displays the number of executed dosing steps and/or the number of dosing steps still possible without refilling the syringe on the display apparatus.

A pipetting device for taking up and dispensing fluid volumes has a displacement device with a displacement mechanism and a displacement housing. The pipetting device has an adjusting device for changing the stroke of the displacement mechanism. The stroke of the displacement mechanism can be adjusted, and the corresponding adjustment value can be displayed by an adjustment indicator. A coupling device, in a use state, couples the adjusting device to a volume indicator and decoupled the adjustment device from the adjustment indicator. In an adjustment state, the adjusting device is coupled to the adjustment indicator and is decoupled from the volume indicator. The adjustment indicator displays an adjustment value for the stroke of the displacement means. The adjustment indicator can be adjusted in an adjustment state, whereas it is fixed in a use state.

A manual-electronic pipetting device for pipetting a medium. The pipetting device includes a controller, a manually displaceable actuating element, at least one piston for aspirating and discharging the medium, a motor for driving the at least one piston in response to an actuation and/or displacement of the actuating element, at least one sensor for determining a displacement of the actuating element, and a data storage. The controller determines a pipetting protocol based on at least one sensor signal of the at least one sensor during a displacement of the actuating element, the controller further storing the pipetting protocol in the data storage, the pipetting protocol including data records indicative of a position and a speed of the at least one piston during the displacement of the actuating element.

A liquid amount control device includes a position detector, a pump, a driver and a controller. The pump is connected with a first tip and configured to suck up the liquid out of the test tube. The driver is connected with the pump and configured to drive the pump to move. The controller is configured to: (1) control the driver to drive a first suction end of the first tip to enter a detection region of the position detector to obtain an end height position of the first suction end; (2) control the driver to drive the first suction end of the first tip to enter the liquid by a first entering depth according to the end height position; and (3) control the pump to suck up the liquid in the test tube through the first tip.

The present application relates to a pipetting device and a pipetting method for pipetting, therefore for aspirating and/or dispensing, a metered liquid using a working gas, independently of the flow- and/or wetting characteristics of the metered liquid, wherein a pipetting channel comprises a first working region, of which the known base temperature is in a lower base temperature range, and a second working region, of which the known working temperature is in a working temperature range that is increased with respect to the base temperature range.

A dosing device is proposed which is designed for dosed output of a fluid. The dosing device has a block-shaped channel body, through which a dosing channel system passes. The dosing channel system has a fluid infeed opening and a plurality of fluid output openings. The fluid output openings are formed by the channel apertures of narrowed output sections of a plurality of output channels of the dosing channel system. The entire dosing channel system, including the output channels, is formed in the block-shaped channel body. The dosing channel system is preferably structured such that the flow velocity of the fluid channelled through during operation is at least substantially the same throughout with the exception of in the output sections of the output channels.

Systems and methods applicable, for instance, to pipette robots. A pipette robot can perform one or more operations regarding deck calibration, one or more operations regarding pipette tip/probe calibration, one or more operations regarding pipette tip pick up, and/or one or more operations regarding tip ejection.

Multivolume liquid pipettes with nested plunger and vacuum chamber configurations and methods of using such pipettes are disclosed herein. These pipettes typically include a body and a fluid displacement assembly with a small plunger element slideably received within a larger plunger element, each movable within a vacuum chamber for the precise and accurate control of the displacement of fluid, such as air. In turn, this allows for a single device to aspirate and dispense a broad range of liquids in a dynamic, accurate, and precise manner. In addition, the devices disclosed herein may also include a multi-tiered spring-loaded ejection mechanism to allow the user to use and eject pipette tips of different sizes.