I know you've never played with IV tubing or spent any time seriously looking at the construction and hookup of an exit bag or tank because the scenarios you come up with (tube falling out of the bag, tube becoming blocked, etc.) are nearly ridiculous.
What on earth does precipitation have to do with the flow of an inert gas? There is absolutely no scenario in which 10 or 15 feet (3-5m) of tubing will become dislodged, tangled, or blocked with proper setup and just a modicum of forethought.
I spend time and energy replying factually to posts. You spend time asking questions and picking the answer you want to hear, facts or logic be damned. I know just by the questions you asked you haven't played with IV tubing, and you listen to the individual who thinks magic precipitation of particulates is relevant to this discussion.