FYI about defoamers: Cannot fathom using "soft soap", which would form insoluble compounds with water hardness, thus be non-rinsing, when rinsing these devices we try so hard to clean up. Whereas polyglycols have the highly desirable property of being insoluble at higher temperatures, and soluble at lower temperatures, thus allowing them to be rinsed in cold water. Rudy Sedlak RD Chemical Company --- On Thu, 3/12/09, Brian Ellis <[log in to unmask]> wrote: From: Brian Ellis <[log in to unmask]> Subject: Re: [TN] Water tank foaming inhibitor To: [log in to unmask] Date: Thursday, March 12, 2009, 8:44 AM The purpose of an anti-foam is to change the physical conditions of the water in the tank, especially the surface tension. Many anti-foam products are based on mixtures of soft soap and octylic alcohol. These are perfectly acceptable for electronics applications. On the other hand, those based on silicones should be viewed with the utmost caution. Brian Ioan Tempea wrote: > Dear Technos, > Anyone familiar with a substance from Dow Chemical, or any other, that would inhibit foaming in the wash tank of the in-line aqueous wash machines? I would appreciate the product name and eventually part#! > Of course, any pros and cons (does it contaminate) would also be appreciated. > Thanks, > Ioan Tempea, ing. > Ingénieur Principal Fabrication / Sr. Manufacturing Engineer 30 ans déjà! - Already 30 years! > 950 rue Bergar, Laval, Québec, H7L 5A1 > t : 450-967-7100 ext : 244 > Mtl : 514-990-5762 > f : 450-967-7444 > [log in to unmask] > www.digico.cc <http://www.digico.cc/> P N'imprimer que si nécessaire - Print only if you must > > --------------------------------------------------- > 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 -----------------------------------------------------