Claisse lithium borate fluxes guarantee the obtention of stable and homogeneous glass disks. These pre-fused chemicals have consistent quality; are available with or without non-wetting agents such as lithium bromide (LiBr) or lithium iodide (Lil). They are also offered in pure (99.98+%) or ultra-pure (99.995+%) grades.

Pre-weighed and customized fluxes are offered in any borate ratio to save you time and meet your special needs. They can be fused directly from the bottle and are made with or without non-wetting agents, oxidizers or internal standard.

We are now offering a new granular flux that eases up applications requiring liquid addition prior to fusion and that fully integrates the operating procedures of laboratories already using this type of flux.

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Borate fluxes and chemicals

Your first choice to fuse samples for XRF, ICP and AA analysis.

Fusion monitor

Quick and error-free proactive monitoring for your fusion instruments

Oxidizers and non-wetting agent


Pre-weighed fluxes

Have you ever thought about the amount of time you spend weighing flux?