Abstract: The invention relates to a two-phase electronic pipette, in which the piston can be moved from the basic position to the lower position and in which the distance between basic position and lower position can be changed.

Abstract: A pipette including a cylinder part having a cylinder and a tip part, which includes a tip channel connected to the cylinder and a movable piston tightly fit within the cylinder for aspirating liquid into and removing liquid from the tip container attached to the cylinder. In the pipette at least the tip part is made of an elastic material, such as rubber. The tip container can thus be easily and reliably fixed to and removed from the tip container.

Abstract: The invention relates to a controllable pipette comprising a piston actuated by a motor, a control system allowing actuation of the piston according to a given pipetting function consisting of several steps, setting keys (7, 8) for selecting the desired pipetting function, a switch (1), which activates the function steps when depressed, and a display (3). The control system comprises a change function, whose activation enables a change of the selected function in the process of its operation. When the change function can be activated, this is indicated on the display and it can be activated by depressing a given setting key.

Abstract: The invention relates to a device (2) for separating magnetic particles comprising several substantially aligned magnets (3). Some of the magnets (3) are inversely oriented. This array reduces any magnetic interference with the collection area of an adjacent magnet.

Abstract: A polarisation fluorometer and a method for calibrating such a fluorometer. The fluorometer includes an excitation channel with an excitation polariser for generating light polarised in a first plane or in a second plane to be conducted as a excitation light to a sample, an emission channel for conducting emission light from the sample, in which emission channel there is an emission polarisation filter, an excitation detector, to which light polarised by the excitation polariser can be conducted from the excitation channel, and a reference detector, to which light polarised by the excitation polariser can be conducted from the excitation channel before being conducted to the sample or to the excitation detector. The reference detector can be calibrated by the excitation detector so that correction measurements can be carried out in real time during sample measurement. The fluorometer can be used especially for fluorescence spectra measurements.

Abstract: A pipette includes a housing defining a suction chamber. A piston is configured to move in the suction chamber. A first retainer mechanism includes a first threading configured to limit a motion of the piston in the suction chamber. A second retainer mechanism includes a second threading configured to limit the motion of the piston in the suction chamber, the second threading having a pitch less than a pitch of the first threading.

Abstract: A cuvette package for loading multicell cuvettes from the package into measurement instruments having their cuvette loading accessories designed to accept known packages. On top of a row of multicell cuvettes is attached a detachable bonding strip having a width smaller than that of the width of the row of multicell cuvettes. The bonding strip serving to keep the row of cuvettes together during transport and being easily detachable when the cuvettes are being loaded into the instrument. The multicell cuvettes are loaded into the instrument from the dispensing device which supports the cuvette in place and has its top surface provided with an opening permitting the removal of the strip by pulling off from the supported multicell cuvette package.

Abstract: The invention relates to a test tube carrier (4) for transporting test tubes in a transport system, said carrier (4) comprising a base (8) having a recess made thereto for accommodating the bottom of a test tube/vial (1), and support members (9, 10) adapted to the carrier base (8) for clamping a test tube (1) inserted in said recess and supporting the same. The support members (9, 10) are permanently affixed to said carrier base (8) and comprise elongated portions with their free ends bent toward the vertical center axis of the carrier base and said upper ends providing a support surface (22) for making supportive contact to the test tube. The bottom of the carrier base recess for accommodating a test tube is advantageously made flat and the carrier base is provided with test tube support members whose support surfaces (22) extend to at least two different heights from the top level of the carrier base (8).

Abstract: The invention relates to a stand for pipette tips, comprising a base and a lid which provide a closed box. Between the base and the lid is a packing, which extends around a joint constituted thereby and is made of a material softer than that used for the base and the lid. This makes it possible to achieve air tightness required by sterility.