This is what a stripper looks like in chemical engineering

Kudos to teaching professor Justin Opatkiewicz for his Halloween costume this year. He came dressed to class as a--chemical engineering--stripper (see picture above). For those of you who are not ChemE majors, that's "a physical separation process where one or more components are removed from a liquid stream by a vapor stream. Stripping is usually carried out in either a packed or trayed column," according to Wikipedia.
Wonder how he's going to top this next year?