Functions of gold tester MH-300K:
1. Can show directly the karat and density of Gold, purity% and density of platinum and density of the other metals

2. Can distinguish between the real precious metal and other fake metal.

3. No more stains and scratches left on your gold after Testing.

4. Only 10 seconds to measure karat & density of gold and purity% & density of platinum (Pt).

5. Based on the marketing demand, the special software was designed. After measuring, the

result will be showed, seen as "HI" or "LO". The display shows "HI" when the value is > upper

limit, the display shows "LO" when the value < lower limit. The value of upper limit and lower

limit are set by user.

6. Can not measure when a sample has air hole or with set stones for metal pieces.

7. User can set the ratio of "copper to silver", such as 7:3, 6:4 and 5:5