Hello Guys: I would like to ask you regarding my analysis. I examined a competitor package that passed MSL1 criteria. We found out that the surface of the package is black (improved EMC adhesion), and i suspect that it was black oxide. Is there any analysis method to confirm this? We did Auger analysis and found these Eleements (Carbon and Oxygen), I would like to ask if black oxidation contains carbon? --------------------------------------------------- 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 ----------------------------------------------------- regards