Quartz Rod is a high-performance cylindrical product made of fused silica (SiO₂ ≥ 99.99%). It features exceptional high-temperature resistance (softening point ~1730°C, long-term use at 1100°C), excellent UV-IR transmittance, low thermal expansion, and superb chemical inertness (resistant to most acids except HF). It also offers outstanding electrical insulation. Widely used https://www.dnquartz.com/high-purity-quartz-rod-fused-silica-rod-for-semiconductor-laboratory-product/