The present invention provides a prism-integrated light-diffusing plate, characterized in that a prismatic portion formed of a plurality of prism-shaped protrusions is provided on at least one surface of a light-diffusing sheet which is formed of a transparent resin material containing a light-diffusing agent and which has a thickness of 0. With use of the adaptor, the body fluid can be measured easily and speedily with the puncture instrument and the measuring instrument attached thereto, which are independent from each other. Accordingly, the relationships between the traffic lines and roads are reliably recognized. The conveyance member includes a positioning unit that is provided on the one end side thereof in the axial direction to position the conveyance member in the axial direction by abutting on the developer container, and an urging unit to urge the positioning unit with respect to the developer container. Gasification can be smoothly achieved by the carbon monoxide generating unit including heating powder or a heating reaction chamber.