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  • Your first choice to fuse samples for XRF, ICP and AA analysis Fusion is a very effective technique to prepare all types of samples for XRF, ICP and AA analysis. It consists of dissolving an oxidized sample in a solvent, usually a lithium borate flux. As the one-stop shop in fusion and the world leader in the production of fluxes, Claisse develops high-quality chemicals that are easy to use and that ensure no contamination. When you use the fluxes developed by Claisse, you guarantee the production of homogeneous and stable glass disks by: Avoiding crystallization Reducing the incidence of glass sticking to the platinumware Avoiding cracking Claisse now offers pre-weighed fluxes to speed up sample preparation. Note that any type or quantity of fluxes can be pre-weighed. Custom Fluxes: A Turnkey Solution Designed for Your Needs Tired of wasting time preparing your own special flux blends because they are not available on the market? Don’t wait any longer, try the custom fluxes offered by Claisse! They can be fused directly from the bottle and are made with or without NWA, oxidizer or internal standard. Claisse develops fluxes with the exact ratio of chemical elements requested by the customer. Here is a list of a few personalized fluxes developed by our experts: 99.98+% pure and 99.995+% ultra pure: Our fluxes are the purest on the market! We guarantee that our pure borate fluxes contain less than 10 ppm for each of the 15 selected elements. A detailed certificate of analysis is supplied with each order. High density: Claisse borate fluxes are three times denser than the other fluxes on the market. They never fill more than half of the crucible, even when fusions for large 40 mm disks are performed. It eliminates all risks of overflow during agitation. Anhydrous: Claisse fluxes have the lowest water content on the market (< 0.05%). Non-hygroscopic: Our fluxes consist of spherical glassy beads, they are therefore non-hygroscopic. Controlled granulometry: Claisse fluxes are 100% less than 500 µm and contain no dust. Consequently, they do not tend to stick to the weighing pan, the funnel and the crucible wall. Non-wetting agents (NWAs) integrated: Our fluxes are available with integrated lithium bromide (LiBr) or lithium iodide (LiI).