Abstract: Conveying of a sample disk method and apparatus for into a reaction vessel is described wherein the sample disk (11) is attached to a tooth (2), where the sample disk is further conveyed to the reaction vessel.

Abstract: The object of the invention is a ratchet wheel pipette having a body and in it a cylinder (3) and a piston (12) and a filling and dispensing arrangement to draw liquid into the cylinder and to dispense it in smaller portions with the aid of the piston.

Abstract: A piston pipette having pulling equipment for moving a piston upward and pushing equipment for moving the piston downward. The pushing equipment has a movable gripping device (5), which when moving downward is attached to the piston and transfers the piston downward, and a movable transfer device (4) extending below the gripping device. According to the structure a pipette is obtained which is gripped a pen-shape handle and with which liquid can be dosed to a desired place as exactly as possible.

Abstract: A pipette provided with a tip remover, which pipette has a lever mechanism, in which the tip is pressed off the pipette. In this way, it has been possible to decrease the force needed for the loosening.

Abstract: A step pipette, which has a dosing rack and therein a dosing toothing, a strike meshing with the dosing toothing, a filling rack connected with the dosing rack by a gear, a striker spring as well as a release member for releasing the tension of the striker spring after the last full-lenght stroke. The solution ensures that also the last liquid dose is always full.

Abstract: The invention concerns a cuvette matrix and its tray. The matrix comprises adjacent cuvettes (2) connected with one another by flexible connecting elements (3). The tray has an aperture (8) for each well, with a flexible clamping element (9).

Abstract: The invention relates to an electrically operable pipette comprising a body member with upper and lower portions and a removable flanged cylinder assembly coupled to the lower portion of the body member via its flange. The cylinder assembly has confined in it, a piston which is vertically displaced by a motor confined in the body member, an adjustable limiter being provided for varying the stroke length of the piston and hence the volume of liquid displaced.

Abstract: Dosage equipment, which includes a peristaltic pump for the dosage of liquid. The set of hoses (17) of the peristaltic pump includes an upper piece (18) and a lower piece (19). The body of the pump includes an attaching piece (13), to which the upper piece and the lower piece can be attached.

Abstract: The invention relates to a washing device for cuvette sets. The cuvette set is placed into a holder (11) in a rotor (10). The washing liquid is removed from the cuvettes by rotating the rotor.

Abstract: Diluting dosage device, in which there is a dilution-liquid cylinder (20), a sample cylinder (30), a press knob (2), and a blocking valve (21). When the knob is depressed, the blocking valve is closed and the pistons (16 and 15) in the cylinders move rearwards, whereat dilution liquid flows into the dilution-liquid duct (2), and a certain quantity of sample into the sample duct (23). When the press knob is returned, the blocking valve is opened and the pistons push the sucked sample and a certain quantity of the dilution liquid out through the tip (7).

Abstract: A set of cuvettes wherein the measurement windows (5) are in the bottom of the cuvettes and surrounded by a matt-faced area (8). The matt-faced area eliminates the access of diffused light to the detector of the photometer.

Abstract: A pipette with adjustable volume, which pipette comprises a frame portion (1) shaped as a handle, a cylinder (2) being formed inside the said frame portion, as well as a piston (3) fitted into the cylinder by means of a seal ring (7), a piston rod (4) connected to the piston (3), as well as a press knob (5) with shaft (6), fitted at the upper end of the frame portion (1). By turning the said press knob (5), a sleeve (20), which determines the upper position of the piston (3) and which is non-rotable in relation to the frame portion (1) of the pipette, can be displaced, by means of a threaded joint (20), upwards or downwards relative the shaft (6) of the knob so as to adjust the volume of the pipette. The pipettable volume can be read numerically through an opening or window (40) in the pipette frame (1) by means of a series of rings consisting of numbered disc-shaped rings ( 31, 39).

Abstract: The subject of the invention is a pipette which comprises a frame portion (1) shaped as a handle, a cylinder being formed inside the frame portion (1), as well as a piston (5) fitted into the cylinder by means of a seal ring (7), a piston rod (4) connected to the piston (3), as well as a press knob (5) with shaft (6), fitted at the upper end of the frame portion (1). Around the shaft (6) of the press knob (5), a calibration sleeve (9) is fitted by means of a threaded joint (8), by means of which calibration sleeve (9) the lower limit of the movement of the piston (3) during pipetting can be determined. According to the invention, the calibration sleeve (9), as surrounded by the mantle (10) of the hollow press knob (5) and by the upper part of the pipette frame (1), is placed at a distance both from the mantle (10) of the press knob (5) and from the inner face of the cover of the upper part of the pipette frame (1).

Abstract: A method and apparatus for washing the solid annular pieces used in immune methods, i.e. the so-called EIA-rings, and for coating such rings with a reagent, as well as for the dispensing of the rings. The EIA-rings are fitted, one after the other, into a tubular container part, which is open at both ends. To the bottom end of the container part an intake tip is attached, and to the other end a device for drawing and exhausting a liquid through the intake tip into the container part. The container part enclosing the EIA-rings is then sealed at both ends until the upper end of the container part is opened for dispensing the rings. The opened end is connected to a dosage device, the intake tip of the container part is removed and the EIA-rings are dispensed by means of the device.

Abstract: A pipette comprising a handle portion, whose upper end is provided with a press knob with shaft and inside which a piston rod is fitted. To the bottom end of the piston rod is connected a piston or, by the intermediate of a common actuating means of the pistons, several pistons and, for each piston, a cylinder part, which is fastened to the frame construction of the handle portion. The piston rod and the press knob shaft, which are parallel to each other, are placed at a distance from each other, and their surfaces facing each other are shaped as jointly operative with a cogwheel or friction wheel fitted between them and journalled on the handle portion by means of a shaft. Then, when the press knob is depressed, by the intermediate of the press knob shaft, of the cogwheel or friction wheel, and of the piston rod, the piston or the pistons in each cylinder portion can be shifted from the lower position into the upper position so as to suck liquid into the tip vessel connected to each cylinder portion.

Abstract: A multi-dose pipette which comprises a body constituting the handle portion, a cylinder portion or piston chamber with a tip tube, fitted at the bottom end of the said body, a main piston fitted into the cylinder portion or piston chamber. The main piston can be pressed down by means of a press knob and a piston rod against the spring force of a spring and is by a spring returned to the upper position. In addition to the main piston, the pipette also comprises a dose piston with its piston chamber. The maximum stroke volume of the main piston is essentially larger than the stroke volume of the dose piston. The piston chamber of the main piston and the dose piston are connected to each other by means of a channel. The end of the piston chamber of the dose piston facing towards the piston rod is provided with a valve which is fitted so that it opens itself and admits air through the valve into the piston chamber at the upper position of the dose piston.

Abstract: A device for detaching and removing the detachable mouth-piece or disposable tip of a pipette, said pipette comprising a handle portion, in whose interior or at whose bottom end are attached a cylinder portion with tip tube, a piston fitted into the cylinder portion, which piston can be pressed down against a spring force by means of a press button and a piston rod, said spring being arranged so that it restores the piston to the upper position, and that a sleeve-shaped pusher or similar pushing means operated by an inertia means is fitted around the tip tube of the pipette, which pusher can move in the longitudinal direction of the tip tube of the pipette.

Abstract: The subject of the invention is a pipette with an adjustable volume, wherein an upper stop bushing provided with inside threading is arranged around the piston shaft of the pipette in corresponding threading formed around said piston shaft. When the press button is turned, the upper stop bushing that determines the top position of the piston can be moved by means of the thread joint up and down in relation to the piston shaft so as to adjust the volume of the pipette. In the frame casing of the pipette, along the side, a longitudinal slit passing through the frame casing and provided with a scale is arranged. At the bottom end of the piston shaft, an expansion part is arranged or formed into which a ball is fitted in a bore,, said ball being pressed outwards by a spring.

Abstract: A pipette comprising a frame portion shaped as a handle, inside which a cylinder is formed as well as a piston fitted into the cylinder by means of a seal ring, a piston rod connected to the piston, and a press knob with shaft fitted to the upper end of the frame portion. The shaft of the press knob is fastened to the piston rod, which is by means of a seal ring guided into the cylinder space. A connecting channel passes through the piston and partly through the piston rod from the bottom end of the piston into the cylinder space. The bottom end of the piston or an extension part attached to same and provided with a through channel constitutes the tip of the pipette, to which the tip vessel is designed to be connected. When the press knob is depressed, the piston moves down and, at the same time, outwards from the cylinder space so as to suck liquid into the tip vessel by means of the vacuum in this way formed through the channel passing through the piston rod, piston, and possible extension part.

Abstract: A disposable pipette tip vessel intended for use in connection with a dosage pipette. The lowest point of the tip vessel has a hole for suction of the liquid to be pipetted into the tip vessel and, correspondingly, for emptying of the tip vessel of the liquid contained therein. In the bottom part of the tip vessel around the filling and emptying hole, a plane or gently conical bottom portion has been shaped so that the tip vessel is arranged so that, between subsequent dosage steps to be performed by means of the pipette, the tip vessel allows the air column to be sucked into the bottom part of the tip vessel to rise as an air bubble or as bubbles of air above the liquid in the tip vessel, whereby the liquid column is correspondingly lowered to the bottom of the tip vessel.