It was 1,1,1 Tricloroethane, not trichloroethylene that was used for years. 1,1,1 was outlawed as an ozone depletor, without a doubt one of the stupidest things government ever did.
----- Original Message ----- To: "Multiple recipients of list CHIPDIR-L" <[EMAIL PROTECTED]> Sent: Friday, February 28, 2003 8:49 AM > Hi Syd, > > A number of years ago I read in a H-P Lab Notes publication that a mix of > alcohol and houshold ammonia was ideal for super cleaning boards. I think the > ammonia was present in 20% concentration. From experience I can tell you that > ethyl acetate is a far better solvent than alcohol to remove most organic solder > fluxes. Its considerably less toxic than the trichloroethylene that was used for > years as a flux remover and degreaser. Only problem with it is you must be sure > it doesn't dissolve any plastic component coverings! With both the ammonia and > the ethyl acetate one must use adequate ventilation. > > Hope this helps. > > Chuck Eisnor > > > "Syd Levine (AnaLog)" wrote: > > > I am working on a high voltage shunt regulator design where contamination on > > the circuit board is causing problems. What is the best way to scrub or > > rinse all or most of the ionic contamination off a circuit board? I usually > > use denatured alcohol to remove flux residue, but that is not good enough in > > this case. Any suggestions or wisdom would be much appreciated. > > > > Here is a link to the Data Sheet on the little project: > > www.logwell.com/products/Codatron.PDF > > > > Syd H. Levine > > AnaLog Services, Inc. > > Phone: 270-276-5671 > > Telefax: 270-276-5588 > > E-mail: [EMAIL PROTECTED] > > URL: www.logwell.com > > > > -- > > Author: Syd Levine \(AnaLog\) > > INET: [EMAIL PROTECTED] > > > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > > San Diego, California -- Mailing list and web hosting services > > --------------------------------------------------------------------- > > To REMOVE yourself from this mailing list, send an E-Mail message > > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > > the message BODY, include a line containing: UNSUB CHIPDIR-L > > (or the name of mailing list you want to be removed from). You may > > also send the HELP command for other information (like subscribing). > > -- > Charles R. Eisnor > Service for Laboratory Equipment & Instrumentation > http://www.scientific-electronics.com > ph: 902-681-0998 > fax: 902-681-1276 > > > -- > Author: Charles Eisnor > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB CHIPDIR-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Author: Syd Levine \(AnaLog\) INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
