Yes, I also use NMP for liftoff. I compared the results after I soaked one
sample in NMP and the other in acetone overnight.
It seems to me that NMP works better than acetone. Does anyone have the same
experience?

Li. Zhang
Graduate Student
Edward P. Fitts Department of Industrial and Systems Engineering
North Carolina State University
Raleigh, NC 27695-7906
USA
TEL: (919) 413-5459
Email: lzhang13@ncsu.edu
Web:  http://www.ise.ncsu.edu
         http://www.nnf.ncsu.edu