Southeast Quartz: Setting a New Benchmark for Compliance in High-Purity Laboratory Digestion and Reaction Tubes

Constructed from high-purity gas-melted quartz glass, these tubes feature a softening point of ≥1730°C, a long-term service temperature of 1100°C, and the ability to withstand temperatures of up to 1250°C for short durations. With a coefficient of thermal expansion of ≤5.5×10⁻⁷/°C, the tubes remain free of cracks even after three cycles of rapid quenching from 1100°C to 20°C, making them ideally suited for demanding applications such as microwave digestion, high-temperature and high-pressure reactions, and acid reflux digestion.

The products exhibit resistance to all strong acids, strong bases, and organic solvents—with the sole exception of hydrofluoric acid. They demonstrate zero corrosion and zero analyte leaching during prolonged exposure to concentrated hydrochloric acid, concentrated nitric acid, aqua regia, and perchloric acid environments. With metallic impurity levels (Fe/Al/Cu/Na) kept ≤0.1 ppm, the tubes effectively prevent elevated blank values ​​in trace analysis, thereby ensuring the precision and accuracy of detection data.

From raw materials to finished products, the entire manufacturing process takes place within a Class 10,000 cleanroom environment, utilizing high-purity deionized water for cleaning and employing dust-free packaging. Free from oil residues, particulate matter, and heavy metal leaching, these tubes fully satisfy the requirements for ultra-trace analysis techniques—such as ICP-MS and ICP-OES—and assist laboratories in successfully passing CMA/CNAS audits. "Many laboratories have reported that standard quartz tubes are prone to cracking, and that the leaching of impurities often renders experimental data invalid or leads to failure during compliance audits," explains the Technical Director at Southeast Quartz. "Our company's new generation of digestion and reaction tubes addresses these issues; every batch is accompanied by a GDMS impurity analysis report, a thermal shock test report, and a cleanliness certification. Featuring a transparent and uniform material structure—free of bubbles and cracks—and maintaining dimensional tolerances within ±0.1 mm, these tubes serve as a direct substitute for imported products while offering a cost-performance ratio improvement of over 30%."