Fire Assay Flux

KLEN International is the global leader in the manufacture and supply of premium quality fire assay fluxes for the mining and geochemical assay laboratory markets.

Our QA/QC regime guarantees gold levels <1.5ppb in all fluxes and silver levels <0.17ppm in assay grade (silver free) fluxes making KLEN the ideal choice for low level detection assays. Every batch of KLEN flux is analysed at a 17025 accredited laboratory ensuring a premium product is supplied every time. With every batch manufactured, KLEN issues a Certificate of Analysis specifying: lead button size and silver prill as well as gold levels present in both the litharge and flux. KLEN International's fluxes can be tailored to your specific requirements, using your preference of either powder or granular litharge, the option of integrated silver as well as a variety of packaging options that we have available. If you require an MSDS for one of your fluxes or would like more information, please contact us.