Dear Colin, According to Temperature & Humidity relationship, the humidity @5 Degree is not as high as the one @23 Degree. Therefore, there's no specific condition for humidity when prepreg storage condition is <5 degree. Thanks & Best Regards! **************************** Shengyi Technology(Suzhou) Co.,Ltd Jeff Chen Office:+86-512-62833168-2202 Mobile:+86 18626116422 http://www.syst.com.cn -----邮件原件----- 发件人: TechNet [mailto:[log in to unmask]] 代表 colin mcvean 发送时间: 2011年8月22日 13:52 收件人: [log in to unmask] 主题: [TN] Prepreg storage conditions Dear all, "Simple" question regarding prepreg storage conditions..... IPC4101 states that prepregs has shelf life of 6 months while in condition 1 at <5 Degrees C (41 F) and 3 months while in condition 2 at <23 Degrees C (73F) and <50% Rh. Condition 1 does not clearly state a humidity control. Does Humidity still have to be less than 50% while under condition 1? or is this a given considering Temperature vs. Humidity relationship rgds Colin ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 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 For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 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 For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------