タイトルまたは説明

The gold refining procedure is given by the solution of it in an acid solution composed

by: Nitric acid with hydrochloric acid, called Aqua Regia.

Once obtained the total solution of gold, the liquid is introduced inside a conical

cylindric tank and mixed with metastability. The solution obtained, adequately mixed,

permit gold dust to fall.

Gold dust, washed and filtered can be melted to obtain bars.

A title of **9,9 thousandth gold can be obtained if all the procedure are correctly

executed.most preferred and approved by leading companies –

Capacity available from 1 kg to *0 kg