Mark, The customer specifies requirements OR, depending on several factors, each supplier lot shall be sectioned and analyzed. For re-qualification to 6012, the requirements are specified therein. Back in the good old days, when processes were not nearly as well managed (nor could the be considering what some of us had to work with) and boards were complex for the time, we would test small lot sizes. When a board type was particularly difficult, a lot of one might comprise the it and would be tested. Obviously, if one board out of a lot of one failed, only one lot was rejected. There's a lot more to this story and some of the other old timers can add interest to it. MoonMan --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------