Good morning Phil. I don't think you're going to find one. Unless the Konform is a harder more durable acrylic coating than the Humiseal 1B31 we use, I think you will find the material to be embedded in the coating and washing will not bring it out. The fact that you can't blow it off indicates that. We have always had to globally strip the acrylic coating to get the "schmutz" off, then recoat the board. If I had to try, it would be with a very mild detergent solution such a Liquinox. Doug Pauls Phil Nutting <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 07/22/2008 10:18 AM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Phil Nutting <[log in to unmask]> To [log in to unmask] cc Subject [TN] Washing dirty conformally coated boards Good morning, We have some circuit boards that we coat with Chemtronics Konform AR, that when returned from the field need to be washed to remove the graphite/carbon and brass dust (it won't blow off). Washing and rinsing at temperature tends to peel the conformal coating off. The currently process is hand washing and rinsing, but it is a totally uncontrolled process. I'm looking for recommendations for a more controlled process that is less likely to remove the coating. I just want to get the dusty stuff off the board. It looks I'm going to have to create a machine or controlled process the works at room temperature. Phil Note: All the information contained in this e-mail and its attachments is proprietary to Kaiser Systems, Inc. and it may not be reproduced without the prior written permission of sender. If you have received this email in error, please immediately return it to sender and delete the copy you received. --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------