Chris, Why do youi put the question? I've never heard about practical in-field-use problems based on ionic level diff between the two treatments. Never. Academics can always find hair cleaving topics, but we working with design production and marketing are more interested in the question "do they work?" Inge -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Chris Ball Sent: den 12 september 2006 20:19 To: [log in to unmask] Subject: [TN] bareboard cleanliness related to surface finish Hello Gurus- Is it fair to expect a higher contamination on a HASL finished bareboard than, say ENIG? I would have expected the same level of cleanliness when receiving the bareboards, but new supplier says they have different levels for different finishes. We specify tighter than std. IPC levels and never varied the spec due to surface finish. Requests for exceptions have been rare and not related to surface finish. Any comments appreciated, -Chris "This e-mail message is intended only for the use of the intended recipient(s). The information contained therein may be confidential or privileged, and its disclosure or reproduction is strictly prohibited. If you are not the intended recipient, please return it immediately to its sender at the above address and destroy it." --------------------------------------------------- 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 ----------------------------------------------------- --------------------------------------------------- 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 -----------------------------------------------------