Sample analysis device

A sample analysis device comprising:

• a thermostatic chamber which holds a liquid;
• a controller which controls the temperatures of the liquid so that the liquid comprises a constant temperature liquid which is held in the thermostatic chamber;
• a plurality of cells which contain a reaction solution;
• a cell disk which holds the plurality of cells being immersed in the constant temperature liquid inside the thermostatic chamber;
• a drive part which rotationally drives the cell disk;
• and
• a holder which holds a light emission unit for generating light to be radiated to the cell and a light receiving element for detecting the light having passed through the cell, characterized in that the holder is immersed in the constant temperature liquid and placed inside the thermostatic chamber,
• wherein the light emission unit and the light receiving element are integrally built into a part of the holder that is immersed in the constant temperature liquid, and
• wherein the holder includes a first vertical arm having a flat first surface and a second vertical arm having a flat second surface, the first and second surfaces facing each other with the cell containing the reaction solution positioned therebetween, and
• wherein the flat first surface adjoins a first side surface of the first vertical arm and the flat second surface adjoins a second side surface of the second vertical arm, the first and second side surfaces being curved surfaces.