Carbon treatment to adsorb organic impurities

This article gives the impression that carbon treatment/filtration will remove ALL organics. In truth, many organics are NOT removed. If this were the case, addition agents , which are almost exclusively organic, added to a plating bath would be removed. Although some additives are removed, especially, non-pitters, many are not or at best only partially removed. Likewise, ALL contaminants may not be removed. Nonetheless, use of carbon fitration is a good housekeeping practice and should be the norm. One should check with their process supplier to determine what additive may or may not be removed and how and what type of carbon to use.

I was not familiar with the Serfilco bulletin but I think the statement "totally" is overblown. It may apply to certain plating solutions, eg, acid copper, but I cannot believe it applies to all platinng processes. In my experience, the usual carbon treatment of bright nickel solutions (using say 4-8 # carbon/100 gals of plating solution) will remove a portion of the primary brightener and very little of the "index" type material. In addition, most of the modern secondary brighteners are also difficult to remove.
Lou Gianelos