Hi Fred That's a million dollar question. Preferred chemistry for conformal coating is like asking what is the preferred car - compact, sports, mini-van, SUV??? You may want to search the archives for some info, as well the IPC document IPC-HDBK-830, Guidelines for Design, Selection and Application of Conformal Coatings. Criteria to consider are the four Ws: end use environment (where), reliability requirements (what lawsuit results when it fails), lifespan requirements (when is it acceptable for it to fail), and what you are trying to accomplish by coating - moisture resistance, debris, insect issues? (why). We use urethane and acrylic in this facility, as well as parylene in others. have a good weekend. regards, Graham Collins Process Engineer, Northrop Grumman Canada Corporation Halifax (902) 873-2000 ext 6215 >>> [log in to unmask] 06/06/03 09:52AM >>> What is the preferred chemistry for conformal coating? I hear a lot are using Acrylic, is that Air dried? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stolar, Paul W Sent: Wednesday, June 04, 2003 5:16 PM To: [log in to unmask] Subject: Re: [TN] Conformal Coating Systems Both are very good systems. I bought a Nordson, just because I was used to the operating system. Both systems have their advantages. Paul Stolar Materials Engineer Houston Technology Center Baker Atlas 713-625-5376 713-625-4949 (fax) -----Original Message----- From: Noble, Ed [mailto:[log in to unmask]] Sent: Wednesday, June 04, 2003 3:39 PM To: [log in to unmask] Subject: [TN] Conformal Coating Systems Hello All, Looking for comments regarding Conformal Coating Systems. I'm aware of several systems, seen a few, and narrowed it down to Asymtek/Nordson or PVA. We'll be dispensing HumiSeal Acrylic Materials. Would appreciate any feedback from the masses. Thank You and Appreciate Your Time, Ed Noble Process Control Supervisor [log in to unmask] Industrial Scientific Corp. www.indsci.com voice 412.490.1884 --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------