Abstract: A fluid feeding apparatus capable of excluding the outer environmental influences in feeding a fluid susceptible to contamination, decomposition or denaturation on contact with the outer environment. The includes comprises at least one liquid source container, a cleaning and/or diluting liquid container, a waste liquid collection container, an inert gas feed pipe A, an inert gas feed pipe B, an evacuation pipe connecting to a vacuum source, and a fluid feed pipe for introducing the fluid to a process. The source container has two pipes. The first pipe has valves arranged therein at positions nearer to and farther from the source container, respectively. The second pipe has two valves arranged therein at positions nearer to and farther from the container, respectively. The path between the valves 1 and 4 and the path between the valves 2 and 5 are connected via a connecting pipe C having a valve 3.

Abstract: A fluid feeding apparatus capable of excluding the outer environmental influences in feeding a fluid susceptible to contamination, decomposition or denaturation on contact with the outer environment. The includes comprises at least one liquid source container, a cleaning and/or diluting liquid container, a waste liquid collection container, an inert gas feed pipe A, an inert gas feed pipe B, an evacuation pipe connecting to a vacuum source, and a fluid feed pipe for introducing the fluid to a process. The source container has two pipes. The first pipe has valves arranged therein at positions nearer to and farther from the source container, respectively. The second pipe has two valves arranged therein at positions nearer to and farther from the container, respectively. The path between the valves 1 and 4 and the path between the valves 2 and 5 are connected via a connecting pipe C having a valve 3.