I am trying to determine reasonable parameters in my pre plate cleaning operation. The first thing I need is a way to check the performance of the cleaning solution. We recently had a bath go bad early but it met all the tests we were doing. We check with a titration method recommended by the vendor as well as a specific gravity check. The other thing I would like to know is what is a reasonable amount of copper to remove during a micro-etch process. Also what would be the maximum that would be expected to be removed. We currently run between 25 and 50 microinches per minute with a two minute cycle. Any suggestions would be greatly appreciated. Bob Peterson *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************