Abstract: Disclosed is a composition for forming a thick oxide superconductor film, the oxide being an RE-BA—Cu based oxide, wherein RE is at least one element selected from the group consisting of Y, Nd, Sm, Gd, Eu, Yb, Pr, and Ho. The composition contains an RE salt of a keto acid having 4 to 8 carbon atoms as an RE component, barium trifluoroacetate as a Ba component, at least one copper salt selected from the group consisting of a copper salt of a branched saturated aliphatic carboxylic acid having 6 to 16 carbon atoms and a copper salt of an alicyclic carboxylic acid having 6 to 16 carbon atoms as a Cu component, and an organic solvent dissolving these metal salt components. In the composition, the RE to Ba to Cu molar ratio is 1:1.3 to 2.2:2.4 to 3.6 and the content of the organic solvent is 25% to 80% by weight.

Abstract: Disclosed is a composition for forming a thick oxide superconductor film, the oxide being an RE-BA-Cu based oxide, wherein RE is at least one element selected from the group consisting of Y, Nd, Sm, Gd, Eu, Yb, Pr, and Ho. The composition contains an RE salt of a keto acid having 4 to 8 carbon atoms as an RE component, barium trifluoroacetate as a Ba component, at least one copper salt selected from the group consisting of a copper salt of a branched saturated aliphatic carboxylic acid having 6 to 16 carbon atoms and a copper salt of an alicyclic carboxylic acid having 6 to 16 carbon atoms as a Cu component, and an organic solvent dissolving these metal salt components. In the composition, the RE to Ba to Cu molar ratio is 1:1.3 to 2.2:2.4 to 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.

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.