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<p>[QUOTE=&quot;SSlava, post: 10682341, member: 4587&quot;]This is a reagent for checking the silver content in metal.If the alloy contains 50 percent or more silver, there will be a pronounced reaction.It seems that the chromium picrate quickly turns red.I don&#039;t know)).This is strange.Although there is a slight reaction to brass, but it is weaker and lasts much longer, and a slightly different reaction.And here the reagent immediately quickly turns red, as if silver[/QUOTE]</p><p><br /></p>

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