New Perkin Elmer Nexion 2200 ICP-Ms

In response to the increasing demand from clients, the Screen Fire Assay offers a customized, precise, and comprehensive analysis. It effectively addresses challenges such as the nugget effect, ensuring that coarse gold is fully captured in the final assay results.

To guarantee the accuracy and representativeness of the results, we rigorously follow internationally recommended procedures, which include:

1. Preparing the pulp with 90% of particles finer than 88 µm from a 1 kg sample (minimum 0.700 kg).
2. Conducting the test on 500 g of pulp (minimum 450 g).
3. Screening the pulp at 106 µm, the standard size for separating coarse from fine materials.
4. Weighing both the coarse fraction (>106 µm) and the fine fraction (<106 µm).
5. Determining the gold content in the coarse fraction by gravimetric fire assay, which represents metallic gold.
6. Performing duplicate fire assays (50 g each) on the fine fraction to determine fine gold content, with the average of the two tests as the final value.
7. Reconstituting the total gold content in the sample by calculation.

This method ensures accurate, representative gold analyses, particularly for samples containing coarse gold.