Richard, I think the document you are looking for is HDBK-001. The original version of that handbook had specific weak organic acids levels that were recommended for ion chromatography. Later versions of the Handbook had those specific levels taken out, for what reasons I don't know. You can also find the values in several papers that I have published in the last 10 years or so. Doug Pauls Rockwell Collins Richard Kraszewski <[log in to unmask] To COM> [log in to unmask] Sent by: TechNet cc <[log in to unmask]> Subject [TN] IPC - IC limits for Flux 08/29/2006 10:58 Residues AM Please respond to TechNet E-Mail Forum <[log in to unmask]> ; Please respond to Richard Kraszewski <[log in to unmask] COM> Does anyone recall an IPC document that implies the limits of weak organics acid residues that could be left on an assembly? I think that it was in the context of IC (ion chromatography). Seems like I bumped into such a document some time back but I can find it again. Thanks in advance. Rich Kraszewski - KEDS --------------------------------------------------- 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 -----------------------------------------------------