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<p>[QUOTE="DaveChapin, post: 3588698, member: 86890"]I really detest that kind of packaging. Makes it impossible to test the item w/o destroying it (the packaging that is).</p><p><br /></p><p>Pamp does have same extremely nice plastic protective packaging for their larger bars though which allows easy bar removal. So that’s what I get.</p><p>Tests I do include:</p><p>- basic weight</p><p>- strong magnets and a very sensitive scale to measure the diamagnetic effect.. which gold has and tungsten has the opposite</p><p>- specific gravity</p><p>- ultrasonic thickness measurement</p><p><br /></p><p>The 2nd test is useful for gold to eliminate the possibility of tungsten presence. Not so useful for platinum. Fortunately for platinum, it is so dense, the weight & specific gravity tests are practically enough to prove it’s Pt. Anything more dense than Pt usually costs MORE than Pt. At great expense someone could try to counterfeit a Pt bar with something denser like iridium or osmium and alloy w/ cheap tungsten, but that alloy might cost more than pure Pt and even then could be defeated with the ultrasonic test.[/QUOTE]</p><p><br /></p>
[QUOTE="DaveChapin, post: 3588698, member: 86890"]I really detest that kind of packaging. Makes it impossible to test the item w/o destroying it (the packaging that is). Pamp does have same extremely nice plastic protective packaging for their larger bars though which allows easy bar removal. So that’s what I get. Tests I do include: - basic weight - strong magnets and a very sensitive scale to measure the diamagnetic effect.. which gold has and tungsten has the opposite - specific gravity - ultrasonic thickness measurement The 2nd test is useful for gold to eliminate the possibility of tungsten presence. Not so useful for platinum. Fortunately for platinum, it is so dense, the weight & specific gravity tests are practically enough to prove it’s Pt. Anything more dense than Pt usually costs MORE than Pt. At great expense someone could try to counterfeit a Pt bar with something denser like iridium or osmium and alloy w/ cheap tungsten, but that alloy might cost more than pure Pt and even then could be defeated with the ultrasonic test.[/QUOTE]
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