On Saturday, May 6, 2017 at 9:21:13 PM UTC-7, wrote:
In orgo labs we used acetone to be sure there was no water left on glassware.

Acetone (spozably) evaporates completely.

There's better for that, though, because acetone is hygroscopic. It
pulls in water from the air. If you can blow off droplets and bake dry afterward, alcohol
is just as good, and less expensive.