Hi All, Seems to be my month for receiving unusual certification requests from our bare board customers. Yesterday, a customer asked us to certify that our boards (or is it our processes?) are "mercury free". Before I start sifting through MSDS's, is anyone aware of any PCB materials (FR4), chemistries or processes that typically contain mercury? Are there any good info sources out there regarding mercury & PC fab? Many thanks for your responses to all of my past questions. Mark Hargreaves --------------------------------------------------- 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 -----------------------------------------------------