You can use maN-490 from www.microresist.de for film thickness in the range 5-16um. Since it is a negative resist, you can use flood exposure on the final pattern and remove it with your standard developer. You can also use organic solvents. Kristjan Leosson, Ph.D. Process Development Engineer Lumiscence A/S -----Original Message----- From: anttipe@cc.hut.fi Subject: [mems-talk] About Negative Photoresist I'm looking for negative photo resist for 5 to 30 um processing. In this process the resolution is not important. The resist and developer should (if possible) be nontoxic. It would nice to have resist stripped in Ace or in some AZ developer. I know Japanese have resist called NFR015, but they doesn't seem to sell it to Europeans. I wonder what you might know about PR's or PR vendors?