Messages crossed there... When a gas is cold enough, it becomes a liquid. I'd say at the liquid nitrogen range would be cold enough to satisfy what I mean... not getting way down to 2-degrees Kelvin or anything.
Is the cutaway chamber sealed (when it's not cut-away of course), forcing the substance to pass solely through the two small tube coming out the back? Or does the substance have some other avenue of passage (in which case, where is that additional opening)?