Atotech has the capability of running TOC - total organic content on the copper plating baths - also running footpaths on a cvs unit helps track the mode of the solution itself - many years ago when working with a major supplier - we had our customers run on an amphr/gallon basis - along with hull cell - cross sections - surface to hole distribution - but found that this was only a good guideline and not a reliable process to put in place - with the introduction of organics thru the copper sulfate solutions - the organics coming in from drag -in - cleaner - quality of ur sulfuric pre-dip - organics from dry-film - TOC is a much more reliable method than setting a number based on amperhrs/gallon. Atotech Canada Ltd richard fudalewski [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************