Steven, We had the same problem a couple of years ago where part markings were coming off of glass bodied parts. It happened during saponified aqueous, and the only way we stopped it 100% was to buy different parts. It all depends on your application and circumstances though, but you may want to pursue that option as opposed to investing in hand cleaning, or other expensive options. We also use RMA flux exclusively, and with some changes in our cleaning parameters (reduced pressure and temperature on our in-line aqueous) we reduced it a lot, still cleaned our boards adequately (ionic clean test) but never really stopped the problem. Even hand cleaning will remove markings and is much harder to control. Hope this helps! Steve McBride [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: [TN] How to Clean RMA Flux? Author: PC:[log in to unmask] at INTERNET Date: 6/1/98 1:26 PM I'm looking for pointers to information on how to clean RMA flux from circuit boards. We're doing contract assembly and the design currently specifies RMA flux. (Build specs are basically WS-6536 and Mil-Std-2000, NOT 2000A or J-Std) We've got an in-line aqueous system (using Armakleen detergents) in place, but it's removing markings from diodes (and the markings are required to be readable). We've also been using a solvent vapor system (AK-225), but it's attacking the adhesive bonding heatsinks to the boards. Anybody care to make suggestions for RMA flux cleaning approaches or pointers to likely candidates for a)information or b)product representatives? Thanks Steven Axdal General Dynamics Information Systems [log in to unmask] 612-853-3830 ################################################################ 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 technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################ ################################################################ 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 technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################