Fire Assay
The firing and cupellation of the samples follows the classical, lead collection, fire assay process, using a nominal 40g charge, with the Gold, Platinum and Palladium being collected. The noble metal prills are parted with nitric acid and the Gold, Platinum and Palladium are dissolved in aqua regia and diluted for ICP analysis.
Our laboratory will routinely determine Platinum and Palladium, simultaneously with Gold, at no added cost.
The following procedure is observed for the reuse of fire assay pots.
Au less than 150 ppb pots reused for ppb work.
Au greater than 150 ppb pots discarded.
Brand new pots will be used for each analysis, if you require, at a small additional cost.
| Detection Limits by ICP-OES ( Method Code : FA002 )
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| Detection Limits by ICP-MS ( Method Code : FA003 )
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