What is Fire Assay Flux?
Flux is a dry reagent used as a key ingredient in the fire assay process. The composition of the flux should be adapted to suit the matrix of the sample being tested. Fluxes are combined with mineral samples containing precious metals and then heated in a furnace to initiate a fusion process precipitating a Lead (Pb) button. Further treatment of this Lead button through the process of cupellation produces a prill containing the precious metals that were present in the original sample. From this point, the assayer can decide on any number of methods to establish a precise breakdown of the precious metals. This method of mineral testing produces results that are so precise they can be specified in parts per billion.
As the manufacture in China, we ensure to supply of premium quality fire assay fluxes for the mining and geochemical assay laboratory markets.
WE can guarantees gold levels<2ppb in all fluxes and silver levels <0.2ppm in assay grade (silver free) fluxes making we are your ideal choice for low level detection assays.