Let me add a couple of eurocents worth. 1. Ion chromatography is useless for incoming board testing. Far too long and far too expensive. By the time you have the results from a valid sample of a batch (say 1-5%), your board will be obsolete. 2. SIR or ECM testing is useless for incoming board testing. Far too long and far too expensive. By the time you have the results from a valid sample of a batch (say 1-5%), your board will be obsolete. 3. IC, SIR and ECM are qualification tests, unsuitable for incoming goods testing. Because of the chemical nature of the surface finishes, it is impossible to extrapolate the results obtained during qualification to production conditions, because there may be slight differences in the stoichiometry of the resins and their various treatments in board manufacture (or even changes of laminate manufacturer) etc. 4. In my considered opinion, the *ONLY* practical test for incoming boards in a production environment is ICT (Ionic Contamination Testing), sometimes incorrectly called the "ROSE" test for historical reasons. It is fast, if rough and ready, and will detect the presence of most (but not all) of the harmful contaminants and bad stoichiometry of resins, without necessarily identifying them (some testers will give indications of the causes of problems by software analysis). Don't underestimate this valuable tool. Brian On 23.05.2014 16:27, Richard Kraszewski wrote: > I actually sent this out on May 16th, but never got a single response. Hoping that was not due to lack of interest, but rather due to the TechNet being down. Hence, I think I'll try this one more time. > > I am hoping to run an informal " min straw poll " here. > > Questions stated are as follows: > > > 1. "Is your organization testing incoming PCB cleanliness via ion- chromatography? Replies such as "YES" or "NO" will suffice, but more detailed explanations are also acceptable. > > > > 2. " If testing via IC, do you use IPC -5704 Table 4.1 limits or other? Replies such as " IPC" or "other" will suffice, but more detailed explanations are also acceptable. > > What's in it for you? I will summarize and post the results after a few days of replies. > > 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] ______________________________________________________________________