Hi All, I am working with Metal Ion free developers (MIF). I find that some TMAH based MIF developers react with copper to form complex, while others do not even though they are TMAH MIF based. What could be the possible explanation behind this? Many Thanks, Ricky Anthony Microsystems Center Tyndall National Institute University College Cork Cork, IRELAND _______________________________________________ Hosted by the MEMS and Nanotechnology Exchange, the country's leading provider of MEMS and Nanotechnology design and fabrication services. Visit us at http://www.mems-exchange.org Want to advertise to this community? See http://www.memsnet.org To unsubscribe: http://mail.mems-exchange.org/mailman/listinfo/mems-talk