2.1M views · 5.9K reactions | How to Gold refining pure gold precipitates. If you're precipitating using sodium metabisulfite: Add 1 ounce (about 1-1/2 tablespoons) for every ounce of dissolved metal in solution. This should be done out-of-doors because the vapors from the bisulfite are corrosive. No matter how good your ventilation system is, it is unlikely to be good enough when using this compound. #puregold #Aquaregia #gold | Archimedes Channel | Facebook

21K views · 185 reactions | Gold refining process aqua regia...

Aqua Regia (Latin for “royal water”) is an acidic, corrosive, and oxidative mixture of three parts concentrated hydrochloric acid (HCl) and one part concentrated nitric acid (HNO3). It is called aqua regia because it is one of the few acid mixtures that can dissolve the “noble” metals: gold (Au), platinum (Pt), and palladium (Pd). 👉👉👉 www.youtube.com/@MakeGold/videos #aquaregia | Archimedes Channel