The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Navies. 30 vols. Washington, DC: Government Printing Office, 1874-1922. Reprint, Gettysburg, PA: National Historical Society, 1971.
I like to hang 0.9% NS to gravity when possible because I always thought that the fluids would stop infusing if the IV site blows. A co-worker of mine disagrees and said that IV fluids hung to gravity would continue to flow and infiltrate if an IV site blows.
While not truly supercritical, these fluids are a far way from the liquid-vapor transition line and will remain single phase as long as low temperatures and high pressures are maintained. As a result, the fluids also avoid issues associated with two-phase systems. There are many examples of such systems.