From the Blog

3

ASSAY FURNACE

In a true fire assay a homogeneous sample of the material is taken and processed in the assay furnace to separate base metals from the precious metals.   

3

PARTING

After the sample passes through three separate furnace runs to prepare it, the sample is chemically separated to determine a weighed amount of Au, Ag, Pt, and Pd.

3

FINAL STEP

The final gold sample is weighed after the fire assay and parting process.  This method continues to be better than any instrumentation analysis such as ICP or X-ray.

Our lab is built on a separate foundation to minimize vibrations. The final sample is weighed on the most accurate Swiss scale available.