/industries/refining/b/weblog/posts/coriolis-mass-flow-measurement-in-ethylene-pipelines-2717435A supercritical fluid (SCF) exists: …at a temperature and pressure above its critical point , where distinct liquid and gas phases do not exist, but below the pressure required to compress it into a solid . [2] It can effuse through porous solids likeen-USTelligent Community 13