To save a space and to reduce a burden of a user due to an exchange work of a reagent having large capacitance.
A reagent mounting mechanism (14) including a reagent mounting part (15) serving as an installation location of containers (9a, 9b, 9c, and 19) for holding a solution such as a reagent is provided in a side surface of an analysis unit (100) to be drawable. An RFID reader (10) for reading an RFID tag (13) installed in the containers (9a, 9b, 9c, and 19) is arranged in a position matching the RFID tag (13) when the containers (9a, 9b, 9c, and 19) are placed on the reagent mounting part (15) of the drawn reagent mounting mechanism (14).