If you are looking for a published ~"official" discussion on the short comings of ROSE testing, look in the IPC Handbook 001. Rich Kraszewski (920)969-6075 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of WTSJ-Willis Tam Sent: Tuesday, July 10, 2012 1:13 AM To: [log in to unmask] Subject: [TN] Ionic Contamination Test for Non-clean PCBA, is it really necessary? Hi Technet, We have implemented non-clean SMT and wave soldering processes for more than 10 years and there's no any issue, but recently one of our new customer required us to buy the Omega tester and set up the Ionic Contamination test for the non-clean PCBA, according to IPC-TM-650. 2.3.25. We feel the Ionic Contamination test might not be an appropriate test for the non-clean PCBA, but is there any technical paper or industry standard for this topic? We need some supporting documents for further discussion with our customer. Any suggestion/feedback would be appreciated. Regards Willis Tam ______________________________________________________________________ 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] ______________________________________________________________________