Hell Bev, you need a little more fire and brimstone in your life. I take a bunch every morning for breakfast on my Cheerios, or is that Wheaties? If we want to go back a ways, the now defunct MIL-P-28809 said something like 2 megohms/cm, or something to that effect concerning assembled board cleanliness. Therefore, the axiom was use only DI water exceeding that requirement to ensure the cleanliness issue was resolved. I just want to know bare board cleanliness requirements now. I also would like to know how to make this information a requirements in my master drawing notes and what document to reference. That document doesn't seem to be 600 or 6012. Earl --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------