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printreg, September, 2000
RE: Heavy Metals in Litho Inks


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From:Jeff Adrian (jeffadrian@johnroberts.com)
Date:08 Sep 00 12:39:00 -0500


RE: 9/8/00 Gary: Printing inks may have trace amounts of metals even today. However, in the = early to mid-90s, with the advent of the CONEG standards, the goal was to = reduce heavy metal content to less than 100 ppm. As a historical note, = this reduction was done in stages over a period of years: first 400 ppm, = then 200 ppm, and finally 100 ppm as the technology to do so developed. As = I recall, some of the most difficulty ink colors to address heavy metals = content were the warm reds. To the best of my knowledge, as of today, most if not almost all printing = inks meet the CONEG standards. As far as addressing very small trace = amounts of metals, I have not heard that a technology has developed to = completely eliminate heavy metals content in printing inks. Perhaps, = someone else on this site can address this. I can say that in my = experience heavy metals content of printing inks has not been either a = customer or regulatory issue for several years now. Regards, Jeff Adrian Director, Environment & Safety The John Roberts Company



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