Technet, What is the typical humidity/ temperture (nominal and +/-) for a CEM production environment? Is there an industry "acceptable" range? We are located here in the west coast and have seen relative humidity level varied from low 30s% (winter) to high 60s in the summer. Under what conditions should a HVAC control system be introduced and without that, what would be the potential impact on the overall manufacturing process? Rgds, Peter --------------------------------------------------- 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 847-509-9700 ext.5315 -----------------------------------------------------