High-purity (99,98+%) pre-fused flux to prepare samples for XRF or ICP analysis. Composition : 99,5 % Lithium Tetraborate and 0,5% Lithium Bromide. 1 kg bottle. Properties: spherical vitreous beads, anhydrous and non-hygroscopic, homogeneous particles, no dust, controlled granulometry, high fluidity.