Problem to be solved: to suppress the old reagents remaining in the circulating flow passage from being transferred to the replaced new reagent container when the sterilization treatment is carried out in the circulating channel.\"Dissolving part\" for sterilizing the reagent, a suction port for sucking the reagent stored in the reagent container, and a sterilizing passage having the disinfectant portion disposed between the suction port and the discharge port having a discharge port for discharging the reagent into the reagent container, and the former A pump for transferring the reagent between the reagent vessel and the sterilization passage through the sterilizing passage, a detecting part for performing the analysis using the reagent, and the reagent in which the air is taken into the sterilized flow passage at a predetermined timing, and the reagent remaining in the sterilized passage is said to be the reagent In vesselThe residual reagent discharging operation to be discharged is performed.Diagram【課題】循環流路で殺菌処理を行う際に、循環流路内に残存した古い試薬が、交換された新しい試薬容器に持越されることを抑制する。【解決手段】試薬を殺菌する殺菌部と、試薬容器内に貯留された試薬を吸引する吸引口、および前記試薬を前記試薬容器内に吐出する吐出口を有し、前記吸引口と前記吐出口の間に前記殺菌部が配置された殺菌流路と、前記殺菌流路を通して試薬を前記試薬容器と前記殺菌部の間で移送するポンプと、試薬を利用した分析を行う検出部と、所定のタイミングで、前記殺菌流路内に空気を取り入れ、前記殺菌流路内に残留する試薬を前記試薬容器内に排出する残試薬排出動作を行うことを特徴とする。【選択図】図3
