Recalling the rule we learned early on in Chemistry, that "like dissolves like", I would venture a guess that non-aqueous cleaning is not going to be real effective at removing no-clean flux residues. Good luck. Rudy Sedlak RD Chemical Company --------------------------------------------------------------------------------- TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF TECHNET Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------