Abstract: The invention relates to a method for measuring the absorbance of a sample. In accordance with the invention, an insert pervious to light is supported on a stand in the measuring well, the insert bottom being located below the sample surface. This allows the length of the light path in the liquid to be accurately selected.

Abstract: The invention relates to a vessel and to a rod used with the vessel for collecting magnetic particles from a liquid containing the particles in the vessel, or for releasing the particles into a liquid in the vessel. The minimum distance from the rod, when inserted into the vessel, from the inner wall surface of the vessel is great enough at each point to resist or prevent any liquid ring or ring part from being formed between the vessel and the rod, which ring could be removed along with the rod. In this manner, liquid is prevented from being removed from the vessel along with the rod.

Abstract: The invention relates to an arrangement and method for transporting test tubes (1) automatically between different processing stages and equipment in laboratories. In the method, the test tubes (1) are placed on transport bases (3) for transportation within the system and the identification data of the test tube (1) is read to identify the sample, after which the transport bases (3) can be moved within the transportation system with the aid of conveyors (15-18)to operation stations, for operations to be carried out on the test tube (1) or sample. The data.

Abstract: An apparatus for separating magnetic particles from a solution includes a vessel with a smaller diameter lower portion and larger diameter upper portion, a magnetic remover and a positioner for the magnetic remover. The transition between the small and large diameter portions of the vessel facilitates separation of droplets from the magnetic remover as it is removed from the vessel, while still retaining magnetic particles.

Abstract: The invention relates to a means for separating magnetic particles from a composition. The means comprises an elongated protective cover (1) that comprises a recess (2) extending from the upper end towards the lower end thereof, the recess comprising a movable magnetic rod (4), the proportion of the length of the rod to its thickness being at least about 2:1. The invention can be used in different applications especially in the fields of biotechnology, biochemistry, and biomedicine. Collecting particles by using the means is easy and fast.

Abstract: A pipette tip kit is for storing and dispensing a plurality of pipette tips. The pipette tips are conical in shape and are capable of being nested so as to be arranged in either one column or a plurality of rows of columns. The pipette tip kit has a paper including a surface with a layer of adhesive thereon for supporting a lateral surface of all of the plurality of pipette tips.

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 invention relates to a pipette comprising a housing, said housing comprising a suction chamber, said suction chamber provided with a movable piston, an adjustable, threaded retainer mechanism for retaining the piston's motion, said retainer mechanism being provided with a range adjustment threading, and a calibration mechanism for the motion of the piston. In addition, the pipette includes another adjustable, threaded retainer mechanism for retaining the motion of the piston, said retainer mechanism being provided with a fine adjustment threading with a pitch that is smaller than that of the range adjustment threading of the first retainer mechanism. According to the invention, the volume is adjusted rapidly and still accurately.

Abstract: The invention relates to a method for measuring the absorbance of a sample. In accordance with the invention, an insert pervious to light is supported on a stand in the measuring well, the insert bottom being located below the sample surface. This allows the length of the light path in the liquid to be accurately selected.

Abstract: The invention relates to a means for separating magnetic particles from a composition. The means comprises an elongated protective cover (1) that comprises a recess (2) extending from the upper end towards the lower end thereof, the recess comprising a movable magnetic rod (4), the proportion of the length of the rod to its thickness being at least about 2:1. The invention can be used in different applications especially in the fields of biotechnology, biochemistry, and biomedicine. Collecting particles by using the means is easy and fast.

Abstract: The invention concerns a solid-phase determination method and equipment and an adapter for use in these. In the method a sample is allowed to react with a separating reagent bound to the outer surface of a separate solid phase body, whereafter the body is removed from the vessel and is taken to a measurement vessel, if required through one or several intermediate step vessels. At least one vessel contains a medium needed in a determination step to be performed therein when the phase body is brought into this vessel. The invention is especially suitable for use in automatic immunodetermination systems.

Abstract: A pipette tip refill pack has several layers of pipette tips stacked upside down in a telescopic fashion. From the pack, the tips can be dispensed to a tip rack which is positioned upside down on top of the topmost tip layer.

Abstract: A fluorometer has a partly transparent mirror through which excitation light is directed to the sample and via which emitted light from the sample is reflected. Thus a high sensitivity and, furthermore, as homogenous a measurement sensitivity distribution as possible within a vessel are achieved. Measuring can be carried out from either above or below. The device is applicable for use especially when the fluorometer has simultaneously a plurality of samples.

Abstract: The application relates to a device for measuring the optical density of samples arranged in strips on a plate. The device comprises a measurement head (3) moving strip by strip in relation to the plate, said measurement head (3) including a light source (4) and a detector (5). Outside the strips, there is provided a transparent spot (9) or a light-proof spot (10), at which the light source intensity or the background signal can be measured either before or after the strip measurement. By employing the single-channel device according to the invention, it is possible to achieve virtually the same speed level as with a multichannel device. However, the device of the invention can be made remarkably simpler. One single-channel device can also be used for measuring several different plates.

Abstract: An optical analyzer measures light directed from a sample to the detector. The apparatus has an optics module which has a detector and optics for directing light emitted by the sample to the detector and which module can be positioned alternatively either so that the light is directed to the detector from above the sample or so that light is directed to the detector from below the sample. The invention is usable in particular in fluorometers and in luminometers.

Abstract: In an embodiment, a separating member is introduced into the compound, the member comprising a separating surface, the particles are pulled from the compound, by using a magnetic field, to be adhered to a separating surface, the effect of the magnetic field is eliminated, and the particles (16) are collected thereafter from the separating surface. In this way, it is possible to collect particles effectively even from a large volume. It is also easy to transfer particles into a small volume. The invention can be employed in various applications, especially in the fields of biotechnology, biochemistry, and biomedicine.

Abstract: A system and method for handling magnetic particles, as in an immunoassay. A remover having a magnetic body and covering sleeve is inserted in a vessel containing magnetic particles and a liquid. The remover is moved up and down with the particles adhered to agitate the liquid and improve adherence of the particles.

Abstract: The invention relates to a method for separating magnetic particles from a composition in a vessel. In the method, particles are first concentrated on the wall of the vessel and collected from this area by using a separation means (1) to which the magnetic particles adhere. In this way, particles can be collected efficiently. The invention can be used in different applications especially in the fields of biotechnology, biochemistry, and biomedicine.

Abstract: A holder for sample-holding plates has a retainer for pressing a plate placed in the holder both against the back wall and against a side wall. Thus a plate of a certain type will always settle in the same position in the holder. It is also possible to use in the holder plates of many sizes, which can be kept in place during handling owing to the retainer. The device is suitable for use in particular in assay methods in which samples to be assayed are handled on plates having a plurality of wells, for example in optical analyzers or other apparatuses.

Abstract: The patent application discloses a multi-cylinder pipette (1). The pipette specifically comprises 16 4.5 mm spaced channels (5), being thus suitable for use with a plate comprising equally spaced 16.times.24 wells. The set of cylinders of the pipette has been assembled from separate elements. A set of cylinders composed of elements provides ease of manufacture. Moreover, the same element and other components can be assembled to provide various pipettes.