Rich; I believe the sample size to volume limitation for the Omegameter 600 is 50 : 1. As you probably know, controlling the rise of the test solution is difficult to control at the very low end. Trying to level off at 1000 ml's is tough when trying to test a 20 in2 sample. Hope this helps. Regards, Rob Rich Olsen <rich@CIRCUITEXPR To: [log in to unmask] ESS.COM> cc: Sent by: TechNet Subject: [TN] Ionic Contamination Test <[log in to unmask]> 03/15/2005 06:57 PM Please respond to TechNet E-Mail Forum; Please respond to Rich Olsen Hi All, What are the size limitations (on the small side) for testing ionic contamination on an assembled board in an Omega Meter 600? What is an acceptable ratio for Square Inches of total surface area versus solution volume? thanks, Rich --------------------------------------------------- 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 -----------------------------------------------------