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<p>[QUOTE=&quot;desertgem, post: 2358751, member: 15199&quot;]The term &#039;fine&#039; in metallurgy refers to &#039;per mille&#039; ( various spelling/language) meaning per thousands ( 0/00). Since the extraction and purification processes could refine the limit, you may sometime see any numbers of 9 such as 99.999 or 99.9999999 purity, it won&#039;t reach 100% until someone invents a &quot;Maxwell demon&quot; that can literally separate one atom at a time. so 90% silver can be written as 0.900 fine, and 99.99% silver as 0.9999 fine, with some dropping the word &#039;fine&#039; and just using &#039;.9999 silver&#039; so the same amount of silver atoms per unit of mass.</p><p><br /></p><p>No device is really cost effective to measure total purity on a small quantity ( some can measure the surface such as chemical interaction which usually damages the area tested) large scale refineries can use sampling methods and mass&nbsp; spectrometer devices to get a overall purity level. Thus as mentioned I would not buy private produced rounds or bars if total silver % in important&nbsp; to a person. If they found that their .9999 bars were actually .9990, would they return them? then they have psychological problems rather than a monetary one. If a person would be very upset, only buy ASE from a mint distributor and have peace&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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