Would anyone expect there to be a difference in the conductivity of N2 vs. O2, air, or vacuum as effects the electrical breakdown voltage? We seem to be getting failures in a backfilled "dry" Nitrogen environment that we don't see with a lid just taped on in air. Thanks, Phil Hersey __________________________________________________ Do You Yahoo!? Bid and sell for free at http://auctions.yahoo.com ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################