In a message dated 02/23/2000 3:09:10 AM US Eastern Standard Time, [log in to unmask] writes: > > This is the main reason why SIR testing is, in many cases, useless to > qualify a flux: you qualify it under lab conditions, totally ignoring > the fact that its behavious will alter in practice due to it mixing with > external contaminants not present on your test vehicles. > SIR USELESS? Gasp!! Burn the Heretic!!!!!!!!!! SIR can be useful, even as a lab tool, you just have to use the right combination of materials, processes, environment and data interpretation. I would agree that we have a long way to go before our existing methods are a good and true measure of field performance. Doug Pauls ############################################################## 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 ##############################################################