I think the most important question yet to be answered is - "After some amount of stuff is extracted, how can I decide HOW MUCH of that would have been harmful and how much was non-harmful" If we get readings in NaCl equiv., we still do not have this kind of separation, so SIR may not be of any value in answering this question. Jon Moore TRW >>> Robisan1 <[log in to unmask]> 04/03/98 12:10pm >>> I am not sure if How Clean is Clean is going to be answered, but How Much More can be Extracted by Extended Times and Temperatures. Just because something can be extracted does not mean it will impact performance. I would first like to see correlation between performance and the amounts of material extracted. I don't see any sense in getting all worried because some test methods give higher numbers than others until we see what the impact on performance is. Susan Mansilla ################################################################ 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 ################################################################ ################################################################ 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 ################################################################