That's the same way I felt about my doctor after being anathematized. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Brian Ellis Sent: Monday, May 05, 2008 11:08 PM To: [log in to unmask] Subject: Re: [TN] Saponifier residue I would say you have a problem. Saponifier usually has, inter alia, two components, an amine and a surfactant. The amine, commonly monoethanolamine, is ionic and the surfactant is commonly an ethylene glycol or similar. The latter has a low vapour pressure and is hygroscopic (and this generally applies to all surfactants, even if the chemistry family is different. It can also form a matrix which can hold the amine in suspension, slowing down iôts evaporation. The idea of leaving hygroscopic residues is anathema to me. If they are mixed with an ionic residue, it is double anathema. IMHO, and in my experience, saponifier cleaning MUST be followed, not by a simple rinse cycle, but by a full wash and rinse cycle, exactly as if it were a water-soluble flux. Brian - bogert wrote: > May 5, 2008 > > I have the following question: If a saponifier is used with a DI > cleaning machine to clean PWAs and the cleaning does not remove all > traces of the saponifier, is there any concern, including sugsequent > exposure, to a humid environment? Any technical reports on this subject? > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > 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/contentpage.asp?Pageid=4.3.16 for additional > information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 > ext.2815 > ----------------------------------------------------- > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------