Scaring scenario! Just what I fear. We use Vigon 200, which is an extremly good cleaner, no doubt. However, what you mention is exactly my fear. What if the cleaner agent can't be removed 100% from that space between can and plastic skin ? As the pH value is 10, such remnants and aluminium will probably not coexist without aggressions. How will the environment be on inside of that plastic after 10 years..or 20 years? Maybe many don't want to know... Ingemar Hernefjord Ericsson Microwave Systems -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Paul Edwards Sent: den 8 oktober 2004 23:53 To: [log in to unmask] Subject: Re: [TN] Aluminum electrolytic Cap's Plenty if you are using a polar material or water...If the disk comes off, there is fluid getting down between the plastic cover and the Aluminum casing...Aluminum is both amphoteric and electropositive so if polar fluids are trapped there they will form a planar electrolytic cell and slowly eat the case. At some point the corrosion will push the plastic away enough to allow fluids and moisture to collect in those locations... Paul Edwards Process Engineering [log in to unmask] Tel: 408-433-4700 FAX: 408-433-9988 Surface Art Engineering 81Bonaventura Dr. San Jose, CA 95134 DUNS: 944740570 CAGE/NCAGE: 1XZ48 -----Original Message----- From: Scott Lefebvre [mailto:[log in to unmask]] Sent: Friday, October 08, 2004 1:43 PM To: [log in to unmask] Subject: [TN] Aluminum electrolytic Cap's We have a problem with the plastic disk coming off after being process through our In-Line PCB washer. What concerns if any should I have. --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- 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 847-509-9700 ext.5315 ----------------------------------------------------- --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------