Short Iodide titration or gravimetric deposition onto platinum for copper determination. Results to within 0.10% accuracy.
We are very aware of the risks of degradation by oxidation and are aware of the added risks of thermophilic bacteria. All handling is done to minimize these risks to accurately report the copper content as received.
Gold and Silver
Fire Assay with gravimetric measurement of the precious metals. We recover every possible trace of gold and silver in both the samples and the QC monitors. Incomplete recovery in the samples will disadvantage a seller, while incomplete recovery in the proofs will cause the samples to report high and disadvantage a buyer.
We use the internationally recognized method developed by Kevin Renton to produce the most accurate results available in the industry.