Woth noting that we've been informed independently by the different suppliers of both our wave solder and our selective solder that mixing alcohol based fluxes and water based fluxes in the same machine as you suggest, swapping between 2 bottles, is not a good idea. The flux delivery pipework joints suffer eeach time you changeover and eventually leaks occur. Unless its unavoidable its best to decide which type works best for you or the customer and stick with that! --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 -----------------------------------------------------