Albert, we have a 600R. We normally set the time for 10 minutes as suggested by the manual. There is an option, however, that you can save time by running in the automatic mode where the test will terminate if the test results remain unchanged for 4 minutes. We did use the automatic feature on some assemblies that had a history of passing the test by a substantial margin. I don't remember where the 10 minute "thing" started (probably out of MIL-P-28809) but that is what the manual recommended and that is what we used most of the time. IPC-TM-650 2.3.26.1 only states "for the predetermined time". Hope that helps. Ron Dieselberg BAE SYSTEMS Cincinnati Electronics Corp. -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] Sent: Monday, October 23, 2000 08:03 To: [log in to unmask] Subject: [TN] Fw:About Cleanliness (Solvent Extract Conductivity) Hi TechNetters, I need some help regarding Cleanliness. Now I have an automatical test machine whose name is omega 600. I usually test 10 minutes for cleanliness of PCB. Can anyone give me the best advice about the test time of omega 600 machine which is used in PCB and tell me the cause ? Thanks, Best Regards, >Albert Lai > TEL : 886-3-323-1111 ext 5381 > FAX : 886-3-323-6611 > E-MAIL : [log in to unmask] <mailto:[log in to unmask]> --------------------------------------------------------------------------------- TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF TECHNET Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------