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<p>[QUOTE=&quot;-jeffB, post: 26412299, member: 27832&quot;]Probably.</p><p><br /></p><p>I&#039;d avoid hydrochloric acid; the chloride ions in combination with oxygen from the air can attack metal too aggressively.</p><p><br /></p><p>I&#039;d also avoid nitric acid, unless <i>very</i> dilute, as it&#039;s a strong oxidizer as well. (It&#039;ll straight-up attack copper, whereas non-oxidizing acids won&#039;t.)</p><p><br /></p><p>Sulfuric acid? Not sure; it&#039;s got some oxidizing power, too. Again, I&#039;d go with a <i>very</i> dilute solution.</p><p><br /></p><p>Phosphoric acid? No idea.</p><p><br /></p><p>I&#039;d experiment if I had any, but I&#039;m completely without mineral acids right now; my last bottles of hydrochloric and sulfuric both weren&#039;t quite vapor-tight, and made lots of trouble on their metal shelves, which leaves me reluctant to get more. And I haven&#039;t had any nitric or phosphoric since I had to clean up my adolescent chemistry-set mess.[/QUOTE]</p><p><br /></p>

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