MAKE | What Supercritical Carbon Dioxide Looks Like

MAKE | What Supercritical Carbon Dioxide Looks Like: Carbon dioxide, however, has a fairly accessible critical point at about 90° F, 1100 psi, and thus supercritical carbon dioxide can and does have fairly routine industrial applications, notably the decaffeination of coffee. But the really cool part is that, at those temperatures and pressures, it’s not too hard to build a pressure vessel from transparent materials that will actually let you get a good look at a supercritical fluid.