Like Dale Callaham I am also happy with our MRC 600 which we have been operating in a multiuser facility for 3 years now. I have been very pleased with the prompt phone and field service provided in our region by Ulrika and Ed Ballenger. PS. A while back I got a reply to a message that I sent on this newsgroup from an alumni of MSU who wanted some news about Bozeman and Montana State University. I accidently erased the message and so could not reply - I was not being rude ! Please write me again. Paul Stoodley Center for Biofilm Engineering [log in to unmask]