Bogert As a basic follow-up to Brians posting - get the stuff off, it will corrode. No, do NOT put the assemblies into an ionic cleanliness tester, you will contaminate the machine a damage the filter unnecessarily. You should ideally, strip the coating completely, re-clean the assembly to ensure thorough removal, cleanliness test and re-coat. Exposing a coated assembly to a cleaning and/or cleanliness test stage, will probably compromise the coatings long term protective performance. Due to these "difficult" re-work issues, most military users (and others) prefer to use Acrylics. They offer broader performance/process benefits - even compared to paraxylylene to which your previous posting referenced. Hope this helps Regards, Graham Naisbitt [log in to unmask] http://www.concoat.co.uk In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move. Douglas Adams For instant access to Product Data Sheets register on the Tech-Shot area of http://www.concoat.co.uk Concoat Limited Alasan House, Albany Park CAMBERLEY GU16 7PH UK Phone: +44 (0)1276 691100 Fax: +44 (0)1276 691227 Mobile: +44 (0)79 6858 2121 -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Bogert Sent: Tuesday, September 04, 2001 11:15 To: [log in to unmask] Subject: [TN] Use of Omegameter for Cleanliness Testing of PWAs that have been Conformal Coated 9/4/2001 My question is, would an Omegameter 600 ionic tester, or equivalent, identify the presence of conductive conformal coating removal gel after Type UR conformal coating was re-applied after rework to remove coating using the conductive stripper (the stripper was manufactured by, and recommended by, the Type UR conformal coating manufacturer). Obviously if the gel was trapped under the re-applied conformal coating, the test would not detect its presence. However, if the test was performed prior to re-applying the conformal coating, would it yield any results that would be useful? Also, what impact would the alcohol in the test solution have on the Type UR coating.