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: 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: 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 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 distance from the rod (3), when inserted into the vessel (1), is great enough at each point to 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, the liquid is prevented from being removed from the vessel along with the rod.

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 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: The invention relates to a means for separating magnetic particles from a composition and for transferring them into a liquid in a vessel. The means comprises an elongated body (1) that comprises a device which can be used to align the longitudinal magnetic field of a protective cover with the lower end of the cover and eliminate the effect of the field from the lower end, and a tip part (8) at the lower end of the body, which is tapered in a concave manner. The means is especially well-adapted for transferring particles to very small vessels. The invention can be used in different applications, especially in the fields of biotechnology, biochemistry, and biomedicine.

Abstract: The invention concerns a method and apparatus for separating magnetic particles from a solution and transferring them into another solution. The apparatus includes a pipette container, a separation wall defining a separation chamber, and a magnet disposed at one of a first location adjacent an outer side of the separation wall and a second location within the separation chamber. The magnet is adapted to be brought into such a state that a magnetic field is applied to the solution so that the particles will gather onto one of an inner side of the separation wall when disposed in the first location, or on a collection surface of the magnet when disposed in the second location, or so that the magnetic field no longer keeps the magnetic particles on the separation wall or collection surface. The pipette container includes a suction cylinder for drawing the solution into and solution from the pipette container via a jet channel.

Abstract: A motor-driven knob pipette, wherein the displacement of a slidably transferable knob controls the movement of a piston by means of an electronic control system. The pipette is light to use, and the user has continuosly a good motory feel with the pipette.

Abstract: The invention concerns a washing device for treatment of rods attached to a plate with a solution. According to the invention the rods (6) are placed in ducts (4) through which the solution is passed. The invention can be used in particular in peptide syntheses and in immunological assay methods.

Abstract: The invention is related to a system of identification of the location of a matrix-like sample tray on a plane (2) in an equipment for the treatment of the samples. The sample tray is placed in a frame having an L-shaped electrically conductive piece (8). The equipment for the treatment comprises a number, corresponding to the number of vertical lines of the tray, electrically conductive strips (9), a number, corresponding to the number of horizontal lines, electrically conductive strips (10), and means for transmitting an electric signal to the strips of the vertical line and for receiving from the strips of the horizontal lines.