Our high-purity quartz round bottom threaded vials are meticulously crafted from fused silica, providing the ultimate solution for secure and non-contaminating storage of sensitive samples and reagents. The precision-engineered screw thread ensures a tight, reliable seal, preventing evaporation, leakage, and external contamination. With exceptional chemical inertness and a smooth, transparent finish, these vials are ideal for trace analysis, corrosive chemical storage, pharmaceutical applications, and any scenario where sample integrity and purity are paramount. Available in a range of standard sizes and fully customizable to meet your specific volume, dimension, and thread type requirements.

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 |
Exceptional Purity & Non-Contamination
Made from high-purity fused silica (quartz), these vials are virtually free of impurities and are chemically inert. This ensures that no foreign substances leach into or react with your sensitive samples, maintaining their integrity for accurate analysis and research.
Superior Chemical Resistance
Quartz glass exhibits outstanding resistance to most acids, alkalis, and organic solvents. This makes these threaded vials ideal for safely storing and processing highly corrosive or reactive chemicals where conventional glass or plastic containers would degrade.
Secure & Leak-Proof Threaded Closure
The precision-engineered screw thread and compatible caps provide a robust, leak-proof seal. This effectively prevents sample evaporation, contamination from the environment, and accidental spillage, crucial for volatile or valuable reagents and samples.
Excellent Transparency & Thermal Stability
These clear quartz vials offer high optical transparency, allowing for easy visual inspection of contents. Additionally, quartz possesses high thermal stability, making these vials suitable for applications involving moderate temperature fluctuations or sterilization without compromising structural integrity.
Application Scenario
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 (fused silica) offers significantly higher purity (typically ≥99.99% SiO2) compared to borosilicate glass. This results in extremely low levels of leachable trace elements, making quartz round bottom threaded vials the superior choice for storing ultra-high purity chemicals, sensitive analytical standards, and samples where even minimal contamination from the container could impact results.
Yes, the precision-engineered screw threads, when paired with appropriate caps and liners (e.g., PTFE-lined), provide a highly secure and leak-tight seal. This makes them well-suited for storing volatile organic compounds, preventing evaporation. While not designed for high pressure, they can maintain an inert atmosphere or hold a moderate vacuum, protecting oxygen-sensitive or moisture-sensitive samples.
Quartz exhibits excellent thermal stability and can generally withstand high temperatures. While direct high-temperature sterilization methods like dry heat ovens are typically safe for quartz, caution should always be exercised with rapid thermal shock, especially if the cap material is not equally robust. For autoclaving, ensure the cap material is compatible with steam sterilization conditions. Always follow recommended heating/cooling rates to prolong the lifespan of the vial.
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.


























