The flow cell and the liquid feeding system

Flow cell (2) includes a generally rectangular plan view of the plate-like body (21), the body (21) introducing part comprising a recess formed in the upper surface (22) is formed within the body (21), introduced parts flow path having one end to the lower end of which is connected (22) and (23), the body consists recess formed in the (21), deriving unit whose other end is connected to the flow path (23) at the lower end (24) It is equipped with a door. Here, the introduction portion (22) is in the liquid by the meniscus of the liquid introduced through the opening, positive pressure, or flow path of the absolute value than the negative pressure exerted on the liquid by the liquid introduced into (23) It is formed to produce a small negative pressure. Flow path (23) is formed so as to produce a negative pressure in the liquid by the meniscus of the liquid introduced into the channel (23). Flow cell can be controlled liquid transfer a small amount of liquid more easily, and to provide a liquid transfer system.