Discover the Factory Custom Laboratory High Temperature Resistant Quartz Ball Header Bowl, a premium solution for demanding applications. This Customization Heat Resistance Outer Square Inner Circular Tapered Long Mouth Quartz Test Tube offers exceptional durability and performance, with SiO2 purity >99.99% and an operating temperature of 1250℃. Ideal for chemical experiments and reaction apparatus, it combines health care, environmental protection, and superior thermo stability.