41 results about "Mechanical pipette" patented technology

The invention provides a full-automatic pipetting station comprising a pipetting mechanism support and a plurality of pipetting mechanisms. Each pipetting mechanism comprises a moving base, a moving rod, a moving rod driving mechanism, a linear guide rail fixing seat and a pipetting head, wherein the moving rod is movably assembled on the moving base, and the pipetting head is arranged at the lower end of the moving rod. The invention also provides an application of the pipetting station in the aspects of liquid sample injection, liquid transfer and the like. The pipetting station provided by the invention is capable of greatly buffering impact and vibration generated in an operation process, low in driving noise and stable and reliable in driving so that the pipetting mechanisms in the station can more flexibly operate and the pipetting head can operate to more plate positions.

An auto-pipetting apparatus includes a dispensing head with at least one pipetting tip mandrel having an elongated stud body with an insertion end. The at least one pipetting tip mandrel mates with a pipetting tip. A first adjustable seal, disposed on the elongated stud body, and a second adjustable seal, disposed on the elongated stud body, seal the pipetting tip mated to the at least one pipetting tip mandrel. The first adjustable seal defines a snub surface. The snub surface effects a substantially continuous circumferential contact seal with radially impinging contact between the pipetting tip and the at least one pipetting tip mandrel. The second adjustable seal is adjustable between a disengaged position and an engaged position and effects a releasable grip and another substantially continuous circumferential contact seal between the pipetting tip and the at least one pipetting tip mandrel around the pipetting tip.

Mechanical pipette with adjustable volume value of aspirated liquid is built of a handle (1) and a nozzle (3) and coupled with them: an ejection mechanism of a pipette exchangeable tip (8), a drawing up and discharging mechanism with a plunger (33) mounted in said pipette nozzle (3), a plunger working stroke adjustment mechanism, a manually actuated lock mechanism of a drive assembly of an adjustment screw of the plunger working stroke, a mechanical counter, a drive mechanism of a mechanical counter and a calibration mechanism for correction of the pipette accuracy deviation. The calibration mechanism comprises, mounted in the mechanical counter, releasable coupling means for complete disengagement of a revolvers assembly from the mechanical counter drive mechanism in CALIBRATION MODE, further, engaged with them, changeover means for changing over the pipette into CALIBRATION MODE and resetting means of the indication of the liquid volume value on the counter in CALIBRATION MODE.

A mechanical pipette comprising: a. a manually drivable mechanical unit for pipetting liquids, b. at least one sensor for detecting operating and / or performance data, c. an operating unit, and d. a display unit, e. wherein a device module comprises the mechanical unit for pipetting, the sensor and operating unit, f. a display module physically separate from the device module completely or partially comprises the display unit, and g. means for wireless communication between the device module and the display module.

Automated pipetting systems and methods are disclosed for aspirating and dispensing fluids, particularly biological samples. In one aspect, a liquid dispenser includes a manifold and one or more pipette channels. The manifold includes a vacuum channel, a pressure channel, and a plurality of lanes. Each lane includes an electrical connector, a port to the pressure channel, and a port to the vacuum channel. The pipette channels can be modular. Each pipette channel includes a single dispense head and can be selectively and independently coupled to any one lane of the plurality of lanes. In some aspects, a valve in the pipette channel is in simultaneous fluid communication with a pressure port and a vacuum port of the manifold. The valve selectively diverts gas under pressure and gas under vacuum to the dispense head in response to control signals received through the electrical connector of the manifold.

The invention relates to a pipetting head having at least one pipette tip for a pipetting device, comprising: a carrier, at least one projection held on the carrier and on which pipette tips are to be clamped, and two elastomer O-rings held on the projection, wherein the two O-rings, the projection and the pipette tip are designed to securely clamp the pipette tip solely by deformation of the two O-rings on the projection, this being brought about by pressing the pipette tip onto the two O-rings.

The invention relates to an automated laboratory machine for automatic handling of laboratory samples, comprising: a working zone; a plurality of predetermined workstations for laboratory articles in the working zone, which workstations have dimensions adapted to the base of a standardized microtiter plate; at least one movement apparatus for moving tools above the workstation; at least one transport tool which is movable by means of the movement apparatus in order to displace laboratory articles in the working zone; at least one pipetting tool which is movable by means of the movement apparatus in order to receive and dispense pipette tips and receive and dispense liquids by means of the pipette tips in the working zone; and a holder for pipette tip carriers, wherein the holder for pipette tip carriers comprises at least one carrying device having a rectangular through-opening and a supporting device connected to the carrying device, and wherein the holder comprising the supporting device is placed on a workstation alongside a pipette tip carrier mounted on the workstation, such that the carrying device is arranged above the pipette tip carrier, which has a base adapted to the base of the standardized microtiter plate, by means of the pipetting tool pipette tips can be received through the through-opening of the carrying device from the pipette tip carrier mounted below the carrying device, and a pipette tip carrier, which has a base adapted to the base of the standardized microtiter plate, can be mounted on the carrying device, wherein the automated laboratory machine comprises an electronic control device which is connected to the movement apparatus and is designed to control the movements of the transport tool and of the pipetting tool by means of the movement apparatus, such that by means of the pipetting tool pipette tips can be received from the pipette tip carrier mounted on the carrying device, the pipette tip carrier can be removed from the carrying device by means of the transport tool, and by means of the pipetting tool pipette tips can be received through the through-opening of the carrying device from the pipette tip carrier mounted below said carrying device.