Jim, This is one of those "Good News, Bad News" responses. The "Good News" is that I have found that Chemtronics "Flux Off CZ" is excellent at removing Rosin Flux residue. The smell is mild but the neat thing is that it evaporates at a near instantaneous rate. This material would even work in a vapor degreaser. Kinda reminds me of the old "Freon TE" days of yore. The "Bad News" is the cost and product support. I have paid over $400 per gallon for this material. I think the 55 gal price is around $17K ! The product support is awful. The guys that make the stuff can't tell you how to reclaim the material, clean it, or even how to use it. I have one gallon of "dirty" material that I would like to re-use at some point. If you decide to use this material, you'll have to set up your own guidelines. Bill Kasprzak [log in to unmask] 716-652-2000 ext 2507 716-687-4378 (fax) ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################