Principle:

According to the buoyancy method of Archimedean principle, gold karat, density and purity% can be showed rapidly and accurately.

Testing steps:

1. Put the sample on the sensor, press MEMORY key to get the in-air-weight;

2. Use the tweezers picking up the sample, and put it on the measuring tray in water gently, press MEMORY key to get the in-water-weight;

3. The machine will show gold karat, density, purity directly.