I'm making a distillation aparatus and I've hit a block. The steel wool I packed into the plastic tubing (acting as a fractionating column) is rusting incredibly fast. I obviously don't want to be drinking rust, so can I just take the wool out and use an extra long tube instead? I'm thinking that having a tube that is very long will cause the gas to condense at least a few times along the way to add a few more theoretical plates. Am I right to assume this, or do I really need some kind of wool packed into this thing?