Double Neck Quartz Flask

1200°C High Temp Resistant

High Transmittance

Acid/Alkali Resistant

Complete Specifications

Our Double Neck Quartz Flask is manufactured from high-purity quartz glass, featuring 99.99% Silicon Dioxide (SiO2) at 4N grade.
Its primary advantage is excellent high-temperature resistance, making it ideal for chemical synthesis, decomposition, distillation, and sublimation processes conducted at temperatures exceeding 500°C, often up to and above 1000°C, including applications requiring direct flame heating. This flask offers strong thermal shock resistance, capable of withstanding local overheating or sudden temperature changes and will not crack from rapid heating followed by cold water shock.
Thanks to its high-purity quartz material and UV transparency, it is also perfectly suited for photochemical synthesis or photolysis experiments utilizing a UV light source for reactant irradiation. The high purity is crucial for applications demanding highly accurate results, such as trace element analysis or the preparation of high-purity materials, as the material is chemically inert and prevents sample contamination.
We offer customization options tailored to your experimental requirements, including custom ground standard joints (standard taper joints) and custom spherical bulb sizes. This allows our flasks to be seamlessly integrated with your other laboratory accessories to achieve your specific experimental objectives.

• Product Name : Double Neck Quartz Flask
• Material : 99.99 % Purity Quartz
• Work Temperature ：~1200℃
• Soften point : ~1730℃
• Hardness :  5.5 – 6.5 Mohs’ Scale 570 KHN 100
• Tensile Strength : 4.8×10⁷ Pa (N/mm2) (7000 psi)
• Compression Strength : >1.1×10⁹ Pa (160,000 psi)

1. High Temperature & Chemical Resistance: Offers excellent high temperature capability, suitable for continuous use at 1200°C and brief exposure up to 1450°C. It exhibits strong resistance to most acids, alkalis, and organic solvents.
2. Premium Quartz Material: Constructed from high-quality quartz with uniform wall thickness and a bubble-free finish, ensuring it is sturdy and highly durable.
3. Uniform Heating (Round Bottom): The uniformly thick round bottom promotes even heat distribution, making the vessel less prone to cracking during rapid temperature changes.
4. Excellent Chemical Stability: Possesses outstanding chemical stability, essential for maintaining purity and integrity in demanding laboratory environments.