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Precious Metal Purity, Gold Karat Tester GP-300K,GP-600K,GP-1200K   Suitable for :   Jewelry industry , Bank , Pawn industry , Gold and Precious Metal research lab .   Principle :   According to the buoyancy method of Archimedean principle , can show gold karat , density and purity% rapidly and accurately .  
Model:GP-300K/600K/1200K The maximum weight:300g/600g/1200g Weighing Range:5-300g/600g/1200g Weighing precision:0.01g Density precision:0.01g/cm3
Functions: ●Only two weighing steps, karat, density and purity of gold can be showed rapidly and accurately. ●With the mixture proportion function, it can be used for testing density and purity of platinum, silver and other metals.   ●With the special software design, it can directly and circularly show the gold karat (including  gold-copper-silver, gold-silver, gold-   copper), gold purity%(including gold-copper-silver, gold-silver, gold- copper)   ●With the function of HI and LO limit, the wide karat range from 9K to 24K and the HI and LO value can be set freely.   ●No stains and scratches left on gold after testing, it doesn’t need to use the sulfuric acid solution to test the standard samples.   ●Pure water or distilled water can be used as testing medium, it is low cost and easily got.   ●By adopting the design of big tank, it can decrease the inaccuracy caused by supporting wire’s buoyancy.   ●Can’t test hollow samples and the samples with precious stones; it can be used as general balance.  
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