Our specialized Chloride Ion Quartz Tube is meticulously engineered for the most demanding halogen analysis and high-purity chemical reactions. Crafted from 99.99% high-purity fused silica, this reaction tube is highly resistant to extreme temperatures (up to 1200°C) and aggressive corrosive media, ensuring uncompromised sample integrity. Featuring a standard frosted head for secure connections and a solidly welded branch pipe for versatile applications, it offers superior performance for precise chloride ion detection, organic halogen combustion, and other sensitive analytical procedures. Full customization is available to meet your exact laboratory or industrial specifications.

Remarks:
- ayment method: By wire transfer or advance payment, depending on the quantity of the order.
- Delivery time: According to the order quantity.
- Transportation method: Sea freight or air freight, depending on the customer.
| Property Content | Property Values |
|---|---|
| SiO2 | 99.99% |
| Density | 2.2×10³ kg/cm³ |
| 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) |
| Coefficient of Thermal Expansion | 5.5×10⁻⁷ cm/cm·°C (20°C-320°C) |
| Thermal Conductivity | 1.4 W/m·°C |
| Specific Heat | 670 J/kg·°C |
| Softening Point | 1730°C (3146°F) |
| Annealing Point | 1210°C (2210°F) |
| Strain Point | 1120°C (2048°F) |
| Work Temperature | 1200°C (2192°F) |
| Electrical Resistivity | 7×10⁷ ohm cm (350°C) |
| Size | Customized |
| Logo | Customized Logo Accept |
Superior Thermal Stability & Shock Resistance (1200°C)
Beyond their impressive 1200°C heat resistance, these quartz U-tubes exhibit excellent resistance to thermal shock, allowing them to withstand rapid temperature changes without cracking or deforming, making them ideal for high-temperature furnaces, thermal cycling, or sudden cooling processes.
Robust Resistance to Corrosive Media
The inherent chemical inertness of quartz glass provides outstanding protection against a wide range of aggressive acids, alkalis, and corrosive gases. This ensures the longevity of the tube and the integrity of your samples or process streams, even in harsh chemical environments.
Exceptional Purity for Contamination-Free Processes
Made from 99.99% high-purity fused silica, these U-tubes guarantee a non-contaminating environment, essential for applications requiring ultra-pure gas or liquid handling, sensitive chemical reactions, or analytical procedures where material leaching must be strictly avoided.
Versatile Customization for Complex Flow Paths
Available in multi-shapes, various dimensions, and with options for transparent or frosted finishes, these U-tubes can be precisely customized. This flexibility allows for the creation of intricate gas lines, specialized drying setups, or unique reaction pathways tailored to specific experimental or industrial requirements.
Application Scenario
Gas Drying & Purification Systems
Quartz U-tubes are widely used as drying tubes or absorption tubes in gas purification setups. They are filled with desiccants (like Drierite or molecular sieves) or absorbents to remove moisture, carbon dioxide, or other impurities from gas streams, especially for high-purity gas applications or when handling corrosive gases.
High-Temperature Furnace & Reactor Connections
Due to their exceptional heat resistance (up to 1200°C), these U-tubes are ideal for connecting different sections of high-temperature furnaces, providing gas inlets/outlets for various reactions, or serving as part of specialized reactors where a bent or U-shaped flow path is required within a heated zone.
Laboratory Absorption & Collection Devices
In analytical chemistry, they are frequently employed as absorption traps or collection vessels in processes involving the bubbling of gases through liquids (e.g., for gas analysis or product collection), or as cold traps to condense volatile components, particularly when dealing with corrosive or high-temperature vapors.
Specialized Gas Flow & Pressure Balancing
The U-shape can be utilized in custom gas manifold systems to create liquid traps, provide a pressure seal (e.g., in a simple manometer setup), or as part of a recirculating gas loop. Their high purity and inertness ensure no contamination of the gas stream, crucial for sensitive research or industrial processes.
Handle with care
Quartz glass products are made from valuable materials and must be handled gently to avoid collisions and falls.
Regular maintenance
The maintenance of quartz tubes must be performed regularly to ensure their long-term stable performance. Regularly check the connections, fixings, and mechanical vibrations of the quartz tubes to prevent abnormalities. The exterior of the quartz tubes is prone to contamination from dust and moisture, so they should be cleaned regularly.
Storage environmen
When storing quartz tubes, care should be taken to avoid exposure to mechanical vibrations, shocks, and excessively high temperatures. They should be kept in a dry, cool, and well-ventilated place, avoiding direct sunlight and high-temperature environments.
Quartz U-tubes offer significantly higher heat resistance, capable of sustained operation up to 1200°C, whereas borosilicate glass is typically limited to around 500°C. They also boast superior chemical inertness against a broader range of corrosive substances (excluding HF and hot phosphoric acid) and possess a much higher purity (SiO2 ≥99.99%), making them ideal for high-purity or extreme-temperature applications where glass would fail or cause contamination.
Yes, absolutely. We specialize in custom fabrication for our quartz U-tubes. You can specify precise bend radii, arm lengths, tube diameters, wall thicknesses, and even integrate additional features like side arms, ground joints, or specific finishes (transparent or frosted) to perfectly match your unique experimental setup or industrial system requirements.
Quartz U-tubes are widely used in gas handling systems for purposes such as gas drying (filled with desiccants), gas absorption or purification (filled with absorbents), and as a component in high-temperature gas lines within furnaces or reactors. Their U-shape can also serve as a liquid trap or a simple manometer for pressure indication, especially when dealing with corrosive or high-purity gas streams.
Frequently asked questions
We specialize in the end-to-end manufacturing of high-purity quartz glass components. Our core product lines include:
Quartz Tubing & Rods: A wide range of diameters and specifications.
Quartz Plates & Discs: Precision-cut and polished for optical and industrial use.
Quartz Labware: A full suite of standard and custom glassware, including beakers, flasks, and boats.
Semiconductor-Grade Quartz: High-purity components like process tubes and carriers for semiconductor fabrication.
Custom Fabricated Components: We can produce complex parts tailored to your unique designs and specifications.
Yes. Custom fabrication is at the core of our business. With over a decade of specialized experience, we partner with companies to provide expert OEM/ODM services. Our capabilities include welding, grinding, drilling, polishing, bending, and other precision processing techniques to create components that meet your exact requirements.
Quality is paramount in our manufacturing process. We are an ISO 9001:2015 certified manufacturer, ensuring that our processes meet international quality management standards.Our products also undergo rigorous SGS testing for purity and performance. We use high-purity raw materials (up to 99.998% SiO2) to produce fused quartz and fused silica products with exceptional thermal stability, high-temperature resistance, and chemical inertness.
We've streamlined our process to be as efficient as possible:
Submit Your RFQ: Send us your technical drawings, specifications, and requirements via our website contact form or email.
Rapid Response: You can expect an initial response within minutes and detailed communication within half an hour.
Design & Proposal: We will deliver a detailed design proposal and a competitive quote within 24 hours.
Prototyping & Production: Upon approval, we move swiftly from prototyping to full-scale production to meet your deadlines.
Partnering with Aoxin Quartz offers several key advantages:
Proven Expertise: With 10+ years in the industry, we have the technical knowledge to tackle complex challenges.
One-Stop Solution: We manage the entire production process, from sourcing high-purity raw materials to fabricating and finishing complex components.
Competitive Value: Located in a major quartz production hub, we leverage an efficient supply chain and advanced manufacturing to offer exceptional quality at a competitive price point.
Dedicated Partnership: Over 90% of our clients become long-term partners. We are committed to your success through responsive service, reliable quality, and innovative solutions.





























