I have heard that certain plastic trays, pallets, antistatic sheets, tapes, etc. could contain sulfide as a plasticiser, which could lead to sulfide contamination of components coming into contact with these items. Is this a fact? Is sulfide contamination a risk if there is no brown paper or cardboard involved? Lothar Thole Product Engineering Manager Vision Systems 14 Park Way Technology Park MAWSON LAKES SA 5095 AUSTRALIA. --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------