Nope: Vigon 200 salts. Note that Vigon maker don't give you 100% content declaration, some part of the cleaning agent is company secret. We have tried to figure out, but with no success. Vigon 200 has pH=11! The after- cleaning has to be VERY rigorous!! Inge -----Ursprungligt meddelande----- Från: TechNet [mailto:[log in to unmask]] För Blomberg, Rainer (FL51) Skickat: den 9 december 2005 16:02 Till: [log in to unmask] Ämne: Re: [TN] (URGENT) Acrylic coating, conclusion. Sodium Chloride salt? Or sodium bicarbonate? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Ingemar Hernefjord (KC/EMW) Sent: Thursday, December 08, 2005 1:46 PM To: [log in to unmask] Subject: Re: [TN] (URGENT) Acrylic coating, conclusion. yep! -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Stadem, Richard Sent: den 5 december 2005 14:52 To: [log in to unmask] Subject: Re: [TN] (URGENT) Acrylic coating, conclusion. Salt, from a cleaning system? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Ingemar Hernefjord Sent: Monday, December 05, 2005 4:24 AM To: [log in to unmask] Subject: [TN] (URGENT) Acrylic coating, conclusion. Remember the production stop and the unique veils and crystal on the boards? This came to me from the guy who was invited to help us solve the problem. (a 'casette' is a PWB mounted on a metal cooler with channels for forced air circulation) > The lacquer problem is solved. I believe that the crystal on lacquer > surface is salt from our cleaning system. The cleaning agent Vigon in > the system normally has a solid content 0.5%. The BFB cassette, after > machine cleaning, still remained a pretty amount of Vigon on inside. > It is also very common that the cassettes are often not > completely dried before being lacquered. The salt within Vigon left > inside cassette is believed to have diffused to the surface of lacquer > following the water/moisture migrations. When water moleculars >evaporated, the salt left on the surface form crystals. This assumption >can also explain why the crystal patterns are always initiated at short >edges of the cassette, where the moisture content is normally slightly >higher because the water absorption is more pronounced along the edge >of boards. Recommended not to use Vigon. > > With best regards > > Qiao Wang PhD So, as many of you suspected, the higly alcaline Vigon200 was the root case, or rather the cleaning machine maintenance. Thank you all for good advice. Ingemar Hernefjord Ericsson Microwave Systems --------------------------------------------------- Technet Mail List provided as a 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/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 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/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 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/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 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/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 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------