Abstract: A probe washing vessel for sucking in and dispensing blood plasma, blood cells, blood serum, or body fluid and the like comprises a washing reservoir, a washing chamber in a form of a hole which formed in the washing reservoir and in which a probe is inserted, and a bypass flow path formed in the washing reservoir and having one end communicating with the washing chamber and the other end opened to the atmosphere.

Abstract: An apparatus for cleaning a dilution cup used in a body fluid analyzer with which is performed an immunological examination such as an examination of infectious disease and determination of blood groups using urine, blood serum, blood cells and blood plasma, comprises a first inlet for cleaning water into a dilution cup, a second inlet for supplying air into the dilution cup, an outlet for discharging cleaning water and air in the dilution cup, and a sealing member for hermetically sealing the dilution cup.

Abstract: A device for injecting a fixed quantity of sample liquid is provided with a unit for aspirating and injecting sample liquid. The sample aspirating and injection unit has a nozzle connecting portion. The liquid injection device is provided with an injection nozzle attached to and detachable from the nozzle connecting portion of the sample aspirating and injecting unit and electrodes are attached to the injection nozzle. Conductive members which are electrically connected to the electrodes of the injection nozzle are attached to the nozzle connecting portion of the sample aspirating and injecting unit, and a detecting unit which cooperates with the electrodes to detect the surface level of sample liquid is connected to the conductive members.

Abstract: Apparatus for detection of the presence of an automobile and its direction of movement into and out of a specific area and activating a reproducing system to provide audible and/or visual information to the driver and then resetting the system upon completion of the reproduction.