Suitable for :
The jewelry industry, Bank, Pawn industry, Gold, and Precious Metal research lab.

Principle :
According to the buoyancy method of the Archimedean principle, can show gold karat, density, and purity% rapidly and accurately. 

Technical data:
Most gold is the alloy of silver and copper excepting 24K  (pure gold). For example, 18K gold includes 18/24 (75%) gold and 6/24 (25%) copper, or silver & copper or silver. Therefore 18K gold products have different densities according to their different ratios. MH-300K can test the karat and density of gold, but can not distinguish the content of alloy. Thus gold karat should be divided into three typical alloy samples: gold-copper alloy, gold-silver-copper alloy, gold-silver alloy. Generally speaking, gold-copper alloy looks reddish, gold-silver alloy looks bluish and gold-silver-copper alloy looks yellowish.  
MH-300K can show the gold karat and density directly by testing the gold-silver-copper alloy. 
And according to the market demand, by adopting the special design of software, the machine will show “HI” when the gold karat is higher than 24K, and show “LO” when gold karat is lower than 9K.