Richard: TOC(total organic content)is another good tool that can be 
used.However I would be careful in drawing to srong of a conclusion for 
setting a carbon treat schedule based on TOC.As stated many things can effect 
total organics and they are not always constant so quanities and signatures 
can change.Also all organics are not harmful.Thus it becomes very difficult 
to quantify and identify detrimental signatures in the mixed organic soup of 
an acid copper bath.							
									
	Bottom line is to be able to have useable correlation data as a 
predictor to when the actual product being plated is starting to move out of 
its acceptablity window.Many good paths and tools are available.	
									
					Regards				
					Michael Barmuta			
					Fluke Corp.			
					Everett Wa.			
					(206)356-6076 
On Tue, 30 Jul 1996 06:37:40 -0700 [log in to unmask] wrote:

> From: [log in to unmask]> Date: Tue, 30 Jul 1996 06:37:40 -0700
> Subject: Re: Carbon Treatment
> To: [log in to unmask]
> 
> 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]
> 
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