You mean he ate Italian salad dressing yesterday? Joyce Koo Materials Researcher - Materials Interconnect Lab Research In Motion Limited Office: (519) 888-7465 79945 Mobile: (226) 220-4760 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls Sent: Tuesday, September 11, 2012 12:29 PM To: [log in to unmask] Subject: Re: [TN] Source of IC Contamination Species Good morning Rich, You may find these related to the plastic bags used for the extractions. I have had occasion in the past to do extractions in the bags and also extraction in glass/Pyrex beakers. I see acetate and formate in the bag samples and not in the beaker samples, but higher sodium in the beaker samples and not in the bag samples. Of course, your facilities could be infested with Acetate Gnomes. Doug Pauls From: Richard Kraszewski <[log in to unmask]> To: <[log in to unmask]> Date: 09/11/2012 11:12 AM Subject: [TN] Source of IC Contamination Species Sent by: TechNet <[log in to unmask]> Occasionally, IC analyses are reported to have elevated levels of acetates and formates. Is it the general consensus that source of these contamination is assumed to be the decomposition of larger molecular weight weak organic acids found in soldering fluxes? I can't imagine that any manufacturer would actually be placing acetic or formic acids directly into a flux formulation. These are much too volatile and aggressive. Thoughts? Rich Kraszewski Senior Process Engineer PLEXUS ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------------------------- This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________