Abstract: A solid type nano-pore sequencer is arrayed easily. In a liquid column separation device including first and second base materials, a liquid feeding unit supplies fluids to a gap between the two base materials. Hydrophilic and hydrophobic regions are disposed on a surface of the second base material, and the hydrophilic region is disposed to oppose a predetermined position of the first base material where a substance to be measured is made to pass through. Also, a flow passage space includes at least one inlet and outlet through which fluids can flow in and out. A representative length of the hydrophilic region is made larger than a distance between the first and second base materials, and thereby a liquid column capable of connecting the first base material and the second base material is formed by making two or more immiscible fluids to flow by the liquid feed unit.

Abstract: The objective of the present disclosure is to provide a technique for reducing a quantity of magnetic particles remaining on a reaction vessel wall surface in a cleaning step for reducing, in a stepwise manner, an amount of a magnetic particle solution in the reaction vessel. The automated analysis device according to the present disclosure causes an agitating mechanism to operate in such a way that a magnetic substance remaining on the wall surface of the vessel in the previous cleaning step is captured by a cleaning solution in the next cleaning step.

Abstract: [Problem to be solved] There is provided a dispensing control method and a dispenser that suppress the division of an air layer and that obtain high dispensing accuracy. [Solution] An automatic analyzer includes: a nozzle 20 that dispenses a dispensed liquid 23; a syringe motor 209 that generates a pressure fluctuation for controlling a flow velocity on aspiration or discharge of the dispensed liquid 23 in the nozzle 20; a piping 210 that connects the nozzle 20 to the syringe motor 209; and a controller 102 that controls operations of the nozzle 20 and the syringe motor 209. The controller 102 calculates positions of interfaces 31 to 34 in the piping 210, and the controller 102 controls the flow velocity based on the positions of the interface 31 to 34 and orientations of the interfaces 31 to 34 that move.

Abstract: The objective of the present disclosure is to provide a technique for reducing a quantity of magnetic particles remaining on a reaction vessel wall surface in a cleaning step for reducing, in a stepwise manner, an amount of a magnetic particle solution in the reaction vessel. The automated analysis device according to the present disclosure causes an agitating mechanism to operate in such a way that a magnetic substance remaining on the wall surface of the vessel in the previous cleaning step is captured by a cleaning solution in the next cleaning step (see FIG. 10).

Abstract: A single device carries out a plurality of washing processes for gradually reducing the amount of a magnetic particle solution in a reaction vessel. A first washing process includes a step for inserting a reaction vessel into a recess provided in the magnetic separation device to capture the magnetic substance using a plurality of magnets disposed along the peripheral direction of the recess such that the same pole faces the reaction vessel, a step for solution aspiration, a step for discharging liquid such that the surface of the liquid goes to a position higher than the upper edges of the magnets, and stirring the liquid. A second washing process includes a step for inserting the reaction vessel into the magnetic separation device and aspirating the liquid, discharging the liquid such that the surface of the liquid goes to a position lower than the upper edges of the magnets.