Ok I can now understand your problem, we were working with water based fluids. A friend of mine is fairly knowledgeable in this area Jeff Gotro jgotro@innocentrix.com. He has a consulting company for polymer materials and has held senior positions with epoxy formulations companies. Regards, Steven J. Adamson Market Manager, Asymtek -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Mehmet Aykol Sent: Wednesday, April 01, 2009 9:30 AM To: General MEMS discussion Subject: Re: [mems-talk] UV curable epoxy Steven, I believe most waxes donot work with many corrosive gases or solvents like Acetone, IPA and etc. Thats why I am looking for an epoxy resin which are usually resistant to most common corrosives and solvents. Mehmet