Used as a flux in sample preparation for X-ray fluorescence (XRF) and inductively coupled plasma (ICP) analysis, enabling complete dissolution of refractory materials like ceramics, minerals, and ores. It facilitates the creation of homogeneous glass beads or fused discs, improving analytical accuracy. Also employed in metallurgy for slag conditioning and as a boron source in specialty glass and ceramic manufacturing due to its ability to lower melting temperatures and enhance thermal stability.