For simplified dismantling of manual metering devices (1), the manual metering device (1) proposed is one which comprises the component carrier (5). This component carrier (5) can be pushed into its use position in the housing (4) through the insertion opening (10) present in the housing (4). The releasable connection (11), which can be released in particular from the outside, is provided for the releasable fastening of the component carrier (5) in its use position within the housing (4) (FIG. 5).

A pipette quickset volume adjustment mechanism having various modes of operation. The quickset volume adjustment mechanism provides for easy selection between at least a direct drive mode, and a speed multiplying mode that hastens pipette volume changes. The quickset volume adjustment mechanism incorporates a planetary gearbox that is appropriately and selectively settable to produce the various modes of operation.

A pipette quickset volume adjustment mechanism having various modes of operation. The quickset volume adjustment mechanism provides for easy selection between at least a direct drive mode, and a speed multiplying mode that hastens pipette volume changes. The quickset volume adjustment mechanism incorporates a gear train, the individual gears of which are appropriately and selectively engageable or disengageable to produce the various modes of operation.

A pipette calibration and volume offset mechanism. The calibration and volume offset mechanism is provided to facilitate user selectable calibration or volume offset operations of a pipette to which the calibration and volume offset mechanism is installed, through axial displacement of a threaded element that effectively moves the home position of the pipette. An offset counter of the calibration and volume offset mechanism is rotationally coupled to the threaded element during a volume offset operation to indicate offset magnitude, but decoupled from threaded element during a calibration or recalibration operation.

A system for preparing a thrombin serum that can include a containment device, a cage received within the containment device, a cap attachable to the containment device, an inlet port configured to introduce a non-anti-coagulated autologous blood fluid into the containment device, and an outlet port. An activator, such as glass beads, can be present within the containment device.

A manual pipette includes a manual volume adjustment having three discreet resolutions. The pipette uses three rotatable step cylinders and one non-rotatable cylinder to set the overall stroke length for the piston. The step cylinders are rotated by manual dials that are accessible on either side of the pipette body. The dial bodies include numerical scales corresponding to the setting of the respective step cylinders.

A top part for a sampling pipette including a hollow outer body forming a handle, a pipetting control stem, a device for adjusting and displaying a volume to be sampled, including a first threaded member for adjusting the volume to be sampled crossed by the control stem, the device also comprising a set of first volume graduations angularly spaced from one another around the longitudinal axis and cooperating with a first mark so as to inform about the volume to be sampled. The first threaded member is rotatably integral with one of both elements formed by the set of first volume graduations and the first mark, the mark being axially arranged between the hollow outer body forming a handle and the control knob.

The present invention concerns a pipette comprising a mechanism with which the stroke length of a piston can be changed by rotating the piston rod. The pipette comprises a locking mechanism which prevents the rotation of the piston rod when the piston has been pushed a certain distance downwards from its upper position, but does not prevent the rotation when the piston is in its upper position.

A system for preparing a thrombin serum includes a containment device, a cage received within the containment device, a cap attachable to the containment device, an inlet port configured to introduce a non-anti-coagulated autologous blood fluid into the containment device, and an outlet port.

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.