Since ammonia is basic (pH >7.0), one _technically speaking_ might want to consider an acidic wash (a dilute solution of white vinegar comes to mind) prior to final wash with de-ionzed water, in order to neutralize any active NH3 components still present on the PCB or components. You'd have to experiment to find the right wash strength to properly neutralize (and not acidify) the board.
FYI Both alkali and acidic deposits will react negatively with exposed metal. r, aj >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Brian Guralnick >Sent: Sunday, December 17, 2006 5:19 PM >To: Protel EDA Discussion List >Subject: Re: [PEDA] "No-clean" flux leakage, was: (500V power supply) > >I use the original blue windex with a firm tooth brush. I >like Windex because it is really weak & it seems to leave no >residule. For those heavy flux PCBs, after using a normal >flux off cleaner, an additional Windex pass will remove the >sticky/tachy residule left behind from the flux cleaner. > >Windex also removes very slowly, layer by layer as you brush, >SMD glue for PCBs with parts on both sides, tuner stabilant >coating, &, Crasy glue. > >I have no idea about compatibility of Amonia-D with >components, however, it does seem to evapourate completely. I >would still be careful around trim-pots, non-sealed relays &, >mechanical switches. > >______________________ >Brian Guralnick >Vergent Technologies Inc. >[EMAIL PROTECTED] > > >----- Original Message ----- >From: "Dennis Saputelli" <[EMAIL PROTECTED]> >To: "Protel EDA Discussion List" <[email protected]> >Sent: Sunday, December 17, 2006 12:42 PM >Subject: Re: [PEDA] "No-clean" flux leakage, was: (500V power supply) > > >> windex is sort of interesting, never heard of using that >> >> are you sure it leaves no residues ? >> >> what is in the blue color? and what about compatibility of >ammonia with >> parts ? >> >> >> Dennis Saputelli >> >> >> >_______________________________________________________________________ >> CONTACT INFORMATION: >> >_______________________________________________________________________ >> Integrated Controls, Inc. Tel: 415-647-0480 EXT 107 >> 2851 21st Street Fax: 415-647-3003 >> San Francisco, CA 94110 www.integratedcontrolsinc.com >> >_______________________________________________________________________ >> NOTE! TO PASS OUR SPAM FILTER PUT THE FOLLOWING IN SUBJECT >LINE: I.C.I. >> >> >> Brooks,Bill wrote: >>> Hmm... sure is a lot more complicated that the old days >where we grabbed >>> a >>> bottle of Trichloroethylene and an acid brush and went to >the sink and >>> washed it all off... In fact we made a degreaser using >Trichlor and it >>> worked great! Took off the toughest flux residues... >>> Too bad it's outlawed now... Or MEK (Methyl Ethyl Ketone) >worked pretty >>> good >>> too. Ahhh.. the good ol' days... >>> >>> :) >>> >>> >>> Bill >>> -----Original Message----- >>> From: Brian Guralnick [mailto:[EMAIL PROTECTED] >>> Sent: Friday, December 15, 2006 5:46 AM >>> To: Protel EDA Discussion List >>> Subject: Re: [PEDA] "No-clean" flux leakage, was: (500V >power supply) >>> >>> Ok, my method of re-cleaning no-clean flux.... >>> >>> Use an electronic sonic tooth-brush going through a >flux-cleaning solvent >>> cycle, then, windex cycle, then, hot water cycle, then back >to windex. >>> Windex was chosen since it completely evapourates & take >any water with >>> it. >>> >>> This was the only way I could completely remove any >electrical effect >>> left >>> by the no-clean flux. >>> >>> Note that I was measuring effect in the micro-amp & >nano-amp regions >>> where >>> battery powered circuits, eg-32Khz oscilators, super-low >powered radio >>> recievers, have a measurable effect. >>> >>> ______________________ >>> Brian Guralnick >>> Vergent Technologies Inc. >>> 438 Brahms Ave. >>> Dollard Des Ormeaux >>> Quebec, Canada >>> H9G 2S6 >>> (514) 624-4003 >>> [EMAIL PROTECTED] >>> >>> >>> >>> >>> ____________________________________________________________ >>> You are subscribed to the PEDA discussion forum >>> >>> To Post messages: >>> mailto:[email protected] >>> >>> Unsubscribe and Other Options: >>> http://techservinc.com/mailman/listinfo/peda_techservinc.com >>> >>> Browse or Search Old Archives (2001-2004): >>> http://www.mail-archive.com/[email protected] >>> >>> Browse or Search Current Archives (2004-Current): >>> http://www.mail-archive.com/[email protected] >>> >>> >> >> >> ____________________________________________________________ >> You are subscribed to the PEDA discussion forum >> >> To Post messages: >> mailto:[email protected] >> >> Unsubscribe and Other Options: >> http://techservinc.com/mailman/listinfo/peda_techservinc.com >> >> Browse or Search Old Archives (2001-2004): >> http://www.mail-archive.com/[email protected] >> >> Browse or Search Current Archives (2004-Current): >> http://www.mail-archive.com/[email protected] > > > >____________________________________________________________ >You are subscribed to the PEDA discussion forum > >To Post messages: >mailto:[email protected] > >Unsubscribe and Other Options: >http://techservinc.com/mailman/listinfo/peda_techservinc.com > >Browse or Search Old Archives (2001-2004): >http://www.mail-archive.com/[email protected] > >Browse or Search Current Archives (2004-Current): >http://www.mail-archive.com/[email protected] > > This e-mail transmission and its attachments may contain information from Avtron Manufacturing, Inc. that is proprietary, privileged and/or confidential and is intended exclusively for the person(s) to whom it is addressed. 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