Disposable mechanism for taking out a fixed amount of fluid and system for supplying a fixed amount of fluid

摘要: There is provided a system for supplying fixed amount of fluid in which the reverse flow eliminated and precise can be delivered. In comprising accommodating unit bag pump connected to device body detachably disposed driving mechanism disposed, bellows having two check valves; valve comprises base through-holes formed therein whose downstream surface curved convex toward made from an elastic thin plate covering hole at center thereof; drives so as expand contract it predetermined stroke.