in 1979 we installed the first chemical recycling system and increased efficiency to 98 %. in 1985 we introduced the first carat control unit which could make rapid carat control using potentiometric ...

1- )The silver proportion in gold scrap is checked. It should be less than 8%. 2- ) The thin parts are put into the titanium boiler. The thicker parts however should be melted first and put into water ...

Earlier, people depended on touchstone tests or the local jeweller’s word. Those methods were quick but not always accurate. Today, most stores and manufacturing units use XRF machines, which check ...