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<p>[QUOTE=&quot;V. Kurt Bellman, post: 1979791, member: 71723&quot;]Not by degree, but by &quot;practice&quot;, yes. I spent over 25 years in the photo lab biz. As you know, the heart of all of traditional photography is based on chemicals reacting with silver compounds, and the organic dye-forming chemistry that uses silver compounds as a catalyst.</p><p><br /></p><p>Eastman Kodak was once the world leading supplier of chemicals to the consumer, and I sold and used a pile. So no, I am not qualified in all chemistry, but I do have a silver-related specialty.[/QUOTE]</p><p><br /></p>

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