4 Pack Laboratory-Grade Borosilicate Glass Set, 110mm Straight and Curved Tubes, a Must-Have for Scientific Experiments in The lab, Home, and Kitchen

Our glass stem mouthpiece is crafted from top-tier borosilicate glass 3.3—an industry-preferred material renowned for its outstanding heat resistance, robust durability, and strong chemical stability. This premium build ensures the tubes maintain consistent performance even in harsh, high-stress environments, delivering long-lasting reliability without wear or degradation.

• 【Superior Borosilicate Glass】 Our glass stem mouthpiece is crafted from top-tier borosilicate glass 3.3—an industry-preferred material renowned for its outstanding heat resistance, robust durability, and strong chemical stability. This premium build ensures the tubes maintain consistent performance even in harsh, high-stress environments, delivering long-lasting reliability without wear or degradation.
• 【Exceptional High-Temp Resistance】 Engineered to endure extreme temperatures up to 520°C (968°F), this glass stem mouthpiece excels in scenarios demanding thermal resilience. It’s the perfect choice for steam chemistry procedures, distillation systems, and laboratory experiments where withstanding intense heat is critical—keeping structural integrity intact and avoiding risks from thermal shock.
• 【Multi-Purpose for Laboratory Scenarios】 Tailored for a wide range of scientific uses, including air drying, gas collection, condensation, and filtration tasks. The set comes with 2 straight and 2 curved tubes, providing flexible setup options to fit different experimental needs—seamlessly adapting to educational laboratories, DIY science projects, or professional research workflows.
• 【Safety-Centric Design】 Featuring smooth, precision-finished edges and evenly distributed glass thickness, the mouthpiece guarantees safe handling (minimizing cut risks) while optimizing airflow efficiency. This user-friendly design balances safety and functionality, making it a dependable option for both beginner and seasoned lab users.
• 【Full-Range Customer Support】 Every purchase is covered by a satisfaction guarantee. If you face any issues with quality, fit, or performance, our support team is ready to offer prompt replacements or dedicated assistance. We put your hassle-free experience first, ensuring you have reliable backing for all your laboratory equipment requirements.