Richard mentioned something about ImAg being used in medical devices. For medical devices worn on the body that use ImAg finish would the FDA require warning the user to avoid deviled eggs? Let me go ask our regulatory manager that one... Jim -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian Sent: Tuesday, August 26, 2008 4:52 PM To: [log in to unmask] Subject: Re: [TN] NTC Paul, Actually people expel hydrogen sulfide, not sulfur dioxide. I read it in a book about the subject written by a medical doctor. I regaled Doug Pauls and Dave Hillman with hilarious trivia from the book as we drove down highway one from SF to LA. At room temperature I would expect no reaction between methane and silver. I am not so sure about possible reactions at elevated temperatures. I am not a catalyst chemist. Bev -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Reid Sent: Tuesday, August 26, 2008 3:02 PM To: [log in to unmask] Subject: [TN] Remembering the Guys from Myth Busters, key note speakers at IPC LA...are those flatulent people who express sulfur dioxide in their gaseous eruptions (from eating deviled eggs) belonging to the order of the red flame or the order of the blue flame? I believe, that day in LA, that Bev enlightened us as to the major component of the gases expressed by flatulent new born babies (H2). How he would know such a thing was never explained however. Paul Reid -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas O. Pauls Sent: Tuesday, August 26, 2008 2:23 PM To: [log in to unmask] Subject: [TN] Well, I guess that depends on what the previous meal was. I don't know if methane has the same harmful effect on immersion silver as sulfur. I suppose I could go knock back a dozen or so deviled eggs and let you know...... And Dewey, that was a horrid pun, even for you. Well done. Doug Pauls Inge <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 08/26/2008 10:12 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Inge <[log in to unmask]> To [log in to unmask] cc Subject [TN] So a TV living with a gaseous family is at risk? Inge ----- Original Message ----- From: "Woolley, Mark D. (Mark)" <[log in to unmask]> To: <[log in to unmask]> Sent: Tuesday, August 26, 2008 7:37 AM Subject: [TN] Any environment that contains sulfur, like hydrogen sulfide or sulfur dioxide should preclude the use of IAg. The sulfur will react with the silver and "grow" sulfides which can be electrically conductive resulting is shorts between vias. This can occur even when the concentrations are within OSHA limits for human exposure. Silver sulfides can be semiconductors or conductors depending on the chemical composition. They are black in color instead of silver, any exposed silver will be affected. Mark Woolley Failure Analyst -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of James Verrette Sent: Tuesday, August 26, 2008 8:25 AM To: [log in to unmask] Subject: [TN] What characteristics of the end use environment would cause IAg to not be an appropriate finish and why? Jim Verrette Senior Electrical Engineer ----------------------------- --------------------------------------------------- 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 -----------------------------------------------------