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<p>[QUOTE=&quot;desertgem, post: 1866996, member: 15199&quot;]The method above is very difficult unless ones has lab devices that can measure volume in thousandths of a millimeter. However, the actual definition of specific gravity is </p><p><br /></p><p>weight of object in air</p><p>_________________________</p><p>weight of object in air -&nbsp; weight of object&nbsp; in water</p><p><br /></p><p>so a device which eliminates the need to measure microscopic volume can be easier to use. This device below is a nice setup for very inexpensive price ( compared with true lab equipment. You can buy without the balance or with.</p><p><br /></p><p><a href="http://www.mineralab.com/Scale.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.mineralab.com/Scale.htm" rel="nofollow">http://www.mineralab.com/Scale.htm</a>[/QUOTE]</p><p><br /></p>

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