Hi, We are evaluating the cleaning ability of a new batch cleaner, which has the ability to monitor the resistivity of the actual DI rinse water throughout the rinse cycle. I checked the archives as well as other sources and it seems like the consensus ranges from 100K to 750K ohms with most suggesting 500K ohm as a good, acceptable resistivity level. I am trying to establish a basis for what is an acceptable final rinse resistivity level for the boards we process. We use RMA based flux. We also have an incoming DI rinse water resistivity meter for reference. Would anyone be so kind as to point me in the right direction? Thanks in advance. Joe --------------------------------------------------- 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 -----------------------------------------------------