Abstract: A method is provided for producing a bioelectrode capable of reducing potential variation noise due to a polarization voltage. The method for producing the bioelectrode comprises forming an electrically conductive rubber body containing a silicone rubber and a silver powder, and immersing the electrically conductive rubber body in an inorganic salt-containing solution at 70° C. or more and 180° C. or less.

Abstract: A brain wave detection bioelectrode capable of improving adhesion is provided. The brain wave detection bioelectrode includes: a holder part that includes a plurality of through holes; an electrode part that is formed of at least one conductive elastic body including a base part extending to an outer peripheral side of a peripheral surface of each of the through holes and including at least one projecting part that projects from the base part and can penetrate the through hole; and a lid part having a conductive property that clamps the base part between itself and the holder part.

Abstract: The disclosure provides an attachment structure of a pipette and a fluid injecting attachment, which includes a first cylindrical hole into which a tip end portion having a tapered shape of the pipette is inserted, on one end side of an attachment main body, and a second cylindrical hole that is communicated with the first cylindrical hole and out through which fluid inside the pipette flows, on the other end side, and a step portion between the first cylindrical hole and the second cylindrical hole due to the second cylindrical hole being formed with a smaller diameter than the first cylindrical hole, the tip end portion of the pipette is inserted through the first cylindrical hole, and while the tip end portion is inserted, the second cylindrical hole has a crush allowance farther toward a tip end side than the tip end portion.