Purity Analysis Certificate for Gold Materials Precious MetalA metallurgical assay is a compositional inspection and analysis of an ore, metal, or alloy.AIM Control (AIM Group®) is a leader in providing purity analysis certificate for gold materials precious metal services as well to other ore, metals, or alloy Platinum, Silver, Palladium, Rhenium, Osmium, Iridium, Ruthenium, Indium, Rhodium, etcThere are two analysis methods to ...