Sigma Chemicals custom manufactures hundreds of fire assay fluxes for the determination of gold levels in soil and rock samples. We supply fire assay flux to most parts of the world.

Using the most chemically pure raw materials we are able to guarantee quality thus offering confidence and reliability to the end users of our assay flux products.

Multiple packaging options are available for your convenience. A complete range of crucibles and cupels are available to suit every possible sample size.

We also stock fire assay furnaces, fire assay flux supplies, spares, consumables and equipment, gold room equipment and protective ware, which enables us to be a ONE STOP SHOP for your assay flux requirements.