Hi Dave > TechNetters - some of our assembly techs use MEK to remove flux. I know > MEK > is potent and probably shouldn't be used for flux removal. What I need is > some justification WHY we shouldn't use MEK. > Because you can validate another flux remover which does an equal or better job that's safer for them to use and the environment. I'm in the process of doing this for Kester 186/186-18 RMA flux. I have half a dozen flux removers (including Kester's 5240) but haven't tested any of them yet. Let ya know if anything is a miracle cure. Hans ~~~~~~~~ Hans M. Hinners WR-ALC/LYPME Bldg. 640 Materials Engineer 380 Second Street, Suite 104 Manufacturing Eng. Sec. Robins AFB GA 31098-1638 912-926-1970 (Voice) 468 - 1970 (DSN) 912-926-7974 (Fax) [log in to unmask] ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################