What range of SIR can be reasonably expected on PWBs made from epoxy glass and polyimide glass materials? Bare board and post assembly. Assembly is manual using both through-hole and SMT parts, using rosin flux. Cleaning is done either in a vapor degreaser (using an n-propyl bromide solvent) or by cold washing in isopropyl alcohol. Thanks. -- Bob Felton [Micro Instrument Co., Escondido, CA] ([log in to unmask]) ################################################################ 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################