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<p>[QUOTE=&quot;V. Kurt Bellman, post: 2726107, member: 71723&quot;]To me, the acid isn&#039;t even the core issue. Maybe it WOULD be if I ever used eZest or any other commercial dip, but I never have. I&#039;ve never even touched the stuff. My objection IS the combination of cupronickel and thiourea ITSELF, because the chemistry of silver and thiourea is where the proverbial &quot;rubber meets the road&quot;, not so much the acid. The entire essence of the &quot;dipping problem&quot; is the tenacity with which silver bonds to sulfides, whether they be the photochemistry of argento-thiosulfates or their eventual breakdown products of ordinary sulfides.[/QUOTE]</p><p><br /></p>

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