Ken, We are using Dow Corning 738 and General Electric 108. They were both recognized by Bellcore as compliant to the Bellcore spec TR-78 as far as volatile silicone content is concerned. However, note that British telecom does not honor that, so we use 3M's jetmelt for those product that will eventually go to BT. Hope this help. K.K. Chin Artesyn Technologies www.artesyn.com ################################################################ TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################