Abstract: An automatic processor for analyzing reaction solutions has a large number of reaction vessels arranged in a circle on a disk, a disk driver for circulating the reaction vessels successively to pass through a sample pouring position, a reagent adding position and an analyzing position in order, sample pouring pipet nozzle for pouring a sample into each of the reaction chambers at the sample pouring position, reagent adding pipet nozzle for adding a reagent into each of the reaction chambers at the reagent adding position, and analyzer for analyzing a reaction solution in each of the reaction vessels at the analyzing position. A large number of reaction vessels are divided into a plurality of reaction vessel groups each of which has a plurality of reaction vessels. The disk driver circulates each of the reaction vessel groups in a predetermined time in accordance with the reaction times of the reaction solutions in the reaction vessels of the same reaction vessel group.

Abstract: A shaft for centrifugally separating a sample includes a first shaft element having a first end taper portion and a middle straight portion, and a second shaft element having a second end taper portion. The first shaft element and the second shaft element are coupled and rotate in opposite directions. An adapter having a ring is mounted on the rotating first taper portion of the shaft by the ring. The adapter receives a sample tube and the adapter and the sample tube are transported forward on the first end taper portion of the shaft. The adapter and the sample tube are sent to the middle straight portion of the shaft and the sample is centrifugally separated in the middle straight portion of the shaft. The adapter and the sample tube are sent to the second taper portion of the shaft and disengaged from the second end taper portion of the shaft.

Abstract: An analyzing apparatus includes a turntable, and a plurality of reaction containers which are arranged on the turntable. This turntable is intermittently rotated so that the train of reaction containers is alternately in a conveyed state and a stopped state. The outer walls of part of the reaction containers in the train of reaction containers are in contact with a fixedly provided friction flange, while the remaining reaction containers in the train of reaction containers is not in contact with the friction flange. Since the reaction containers located in an area where they make contact with the friction flange are conveyed while they are contacting with the friction flange as the turntable is rotated, the motion of the turntable is transmitted to the reaction containers, and the reaction containers are thereby rotated on their own axes so as to allow the reaction liquid in the containers to be stirred.

Abstract: A sheath flow type flow-cell device for photo-particle-analyzer comprises a substantially flat top surface, at least one first inlet for sheath fluid, at least one first flow passage communicated with the at least one first inlet and contracted toward downstream to be a straight capillary flow passage, a discharge port provided at a terminal end of the straight capillary flow passage, a second inlet for sample fluid, a second flow passage for sample fluid communicated with the second inlet and contracted toward downstream, and coupling portions for sealingly coupling with the particle photo-analyzer. The second flow passage is opened within the at least one first flow passage so as to keep a part of the at least one first flow passage above and below an opening of the second flow passage. The opening is faced in the same direction as the straight capillary flow passage. A wall portion on which the opening locates is rounded.

Abstract: Fluorescent dye is added to a sample including lymphatic cells stimulated by antic bodies to measure fluorescence polarization. The fluorescence polarization varies with time. The measurement is stopped after a predetermined measurement time, and the lymphatic cells are separated from the sample by filtering. In order to determine the fluorescence polarization in a filtering process, approximate equations of the reaction are determined based on the fluorescence polarization measured during the reaction process. Based on the approximate equations, the fluorescence polarization in the filtering process is calculated. The reaction process is approximated by both an approximate linear line and an approximate curve. A reaction data at a predetermined future time is calculated based on the two approximate functions so that a reliability of the resulting data is improved.

Abstract: Apparatus for producing timing signals for photometric measurement by utilizing light transmitted through samples to be analyzed.