Flow Cell and Automatic Analysis Device

An automatic analysis device comprising:

• a flow cell including a base provided with an inlet and outlet of a flow path of a fluid containing an analyte, an electrode for applying a voltage to the analyte, a light receiving window made of a member that transmits light emitted from the analyte by the voltage applied on the electrode, a gasket provided between the base and the light receiving window, and a flow chamber surrounded by the base, the light receiving window, and the gasket;
• a unit for supplying a fluid containing magnetic particles having a labeling substance to the flow cell;
• a voltage applying unit for applying a voltage to the electrode;
• a magnetic trapping unit for trapping the magnetic particles supplied to the flow cell at a predetermined location;
• and
• a light detection unit for detecting light generated from the flow cell via the light receiving window, wherein
• the gasket has a deformation amount of 0 mm or more and 0.2 mm or less in the chemical immersion test defined in the following (1), and the gasket has a surface adhesive force of 14 N/cm2 or more and 40 N/cm2 or less in the surface adhesion evaluation test defined in the following (2):
• (1) Chemical immersion test:
• After immersion in 0.2 mol/L of potassium hydroxide solution at 40° C. for 31 days, the amount of dimensional change is measured.
• (2) Surface adhesion evaluation test:
• A lower surface of a test piece (10 mm square, 0.5 mm thick) is fixed to acrylic resin 1 (20 mm×30 mm, 2 mm thick) with double-sided tape;
• acrylic resin 2 (20 mm×60 mm, 2 mm thick) is placed on an upper surface of the test piece;
• a 2 kg weight is allowed to stand on the upper surface of the acrylic resin 2 for 1 minute;
• the acrylic resin 2 of the evaluation sample obtained by integrating the acrylic resin 1, the test piece, and the acrylic resin 2 is moved in the vertical direction;
• and the force at which the interface between the test piece and the acrylic resin 2 separates is measured with a force gauge.