FLOW CHANNEL MEMBER JOINT STRUCTURE AND COLUMN ATTACHMENT/DETACHMENT UNIT

To provide a flow channel member joint structure which enables easy attachment/detachment of a member represented by a column to/from a member represented by a column attachment/detachment unit through a simple structure without using many parts associated with a complicated structure.SOLUTION: A flow channel member joint structure disclosed herein allows a first flow channel to be aligned with a second flow channel by attaching a first member having the first flow channel to a second member having the second flow channel to enable flow of a liquid. The first flow channel is open at a first end face of the first member, where the first flow channel has an increasing diameter portion, where an inner diameter thereof gradually increases toward the first end face, formed at an end portion thereof. The second flow channel is open at a second end face of the second member.SELECTED DRAWING: Figure 9 【課題】複雑な構造で多数の部品を用いずに、簡単な構造によって、カラム着脱ユニットに代表される部材に、カラムに代表される部材が容易に着脱できるような流路部材の接合構造。【解決手段】第一流路を有する第一部材に、第二流路を有する第二部材を装着させることで、第一流路と第二流路とを互いに位置合わせして液体の流動を可能とする流路部材の接合構造であって、第一流路は第一部材における第一端面に開口し、第一流路の端部には、第一端面に向かって内径が漸増する拡径部が形成され、第二流路は第二部材における第二端面に開口する。【選択図】図９