Purechem supplies various mixes containing Lithium Tetraborate and Lithium Metaborate in different proportions. Purechem fluxes are available with integrated lithium bromide (LiBr) or lithium iodide (LiI). Experience has shown that the amount of non-wetting agent (NWA) added to the fusion by the analyst is not constant and this affects the analytical accuracy of the analysis. The physical and chemical characteristics of these anhydrous homogeneous mixes of high quality respond to the particular needs of our customers.