Fluxes are the sample solvents. Recent research carried out by Claisse demonstrates that the choice of flux is crucial in obtaining a quality analysis. In fact, the right flux enables you to eliminate the risk of crystallization and cracking of the glass disk, for a given type of sample.

Claisse fluxes are made of lithium borate or sodium borate, obtained through our particular fusion process, which yields a final solution of a homogeneity, purity and quality without equal. Claisse is the first company to offer and manufacture fused fluxes with integrated non-wetting agents (NWA) as an option. 

Flux - Fusion Chemicals

Borate fluxes and chemicals
Your first choice to fuse samples for XRF, ICP and AA analysis

As the one-stop shop in fusion and the world leader in the production of borate fluxes, Claisse develops high-quality chemicals that are easy to use and that ensure no contamination.

Pre-weighed fluxes

Claisse now offers pre-weighed fluxes to speed up sample preparation. Note that any type or quantity of fluxes can be pre-weighed. They come in vials that are easy to use for your convenience.

Certified reference materials

Claisse has a new turnkey solution for your XRF applications. Our fused borate disks are made with certified Reference Materials (CRMs) or customized mixtures of synthetic oxides. They are custom-made to fulfill your personal analytical needs.