The original question (mine) referred to the situation where a customer doesn't agree with the contmination-limit that's used for process control with the Ionograph. Qualification of this process was mainly based on SIR-measurements. Daan Terstegge Thales Communications Unclassified mail Personal Website: http://www.smtinfo.net >>> [log in to unmask] 10/03/02 03:08pm >>> Joyce, As I understood the orignal question, the Ionograph measurements were used for a sort of product (assembly) qualification per J-STD-001C, i.e. neither process development nor process control. Per-Erik --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------