Thanks Chief, I have found some info on DMF azeotropes that state that it is not very simple to seperate.
This link shows techniques for other azeotropic seperations using something called a " Neilson-Kryger apparatus" which looks like a type of modified Allihn condenser.
http://www.epa.gov/epaoswer/hazwaste/test/pdfs/5031.pdf (http://www.epa.gov/epaoswer/hazwaste/test/pdfs/5031.pdf)
I have read in another Hive post that DMF can become unstable if distilled at atmospheric pressure. None of the literature that I found on DMF mentions this. Is there any truth in this?