Quartz Tube
Quartz Plate
Quartz Rod
Optical Applications
Semiconductor Industry
Laboratory and Chemical Applications
Engineered for the most demanding analytical applications, our high-purity (>99.99% SiO₂) fused quartz micro crucibles deliver unparalleled performance. Their exceptional thermal stability up to 1200°C and resistance to thermal shock make them the ideal choice for thermogravimetric analysis (TGA), high-temperature ashing, and material evaporation. The chemically inert surface ensures zero sample contamination for the most accurate results. Available in a range of standard sizes for common instruments or fully customizable to your exact 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.
| Item No. | Product Name | Specification |
|---|---|---|
| 1 | Quartz Cell for Calorimeter | OD21mm*H17mm |
| 2 | Quartz Cell for Calorimeter | OD21mm*H18mm |
| 3 | Quartz Cell for Calorimeter | OD22mm*H20mm |
| 4 | Quartz Cell for Calorimeter | OD25mm*H15mm |
| 5 | Quartz Cell for Calorimeter | OD25mm*H19mm |
| 6 | Quartz Evaporation Boat for Organics | OD13mm*H13mm |
| 7 | Quartz Evaporation Boat for Organics | OD18mm*H20mm |
| 8 | Quartz Crucible for Tungsten Blue Evaporation | OD12mm*H20mm |
| 9 | Quartz Crucible for Tungsten Blue Evaporation | OD16mm*H14mm |
| 10 | Quartz Crucible for Tungsten Blue Evaporation | OD18mm*H20mm |
| 11 | Quartz Crucible for Tungsten Blue Evaporation | OD25mm*H30mm |
| 12 | Quartz Micro Evaporating Dish 1ml | OD14mm*H14mm |
| 13 | Quartz Micro Evaporating Dish 2ml | OD16mm*H16mm |
| 14 | Quartz Micro Evaporating Dish 3ml | OD19mm*H19mm |
| 15 | Quartz Micro Evaporating Dish 4ml | OD20mm*H20mm |
| 16 | Quartz Micro Evaporating Dish 5ml | OD22mm*H22mm |
| 17 | Quartz Micro Evaporating Dish 6ml | OD23mm*H23mm |
| 18 | Quartz Micro Evaporating Dish 8ml | OD24mm*H26mm |
| 19 | Quartz Micro Evaporating Dish 10ml | OD28mm*H30mm |
| 20 | Quartz Micro Evaporating Dish 15ml | OD32mm*H32mm |
| 21 | Quartz Micro Evaporating Dish 20ml | OD34mm*H34mm |
| 22 | Quartz Micro Evaporating Dish 25ml | OD36mm*H36mm |
| 23 | Quartz Micro Evaporating Dish 40ml | OD42mm*H42mm |
| 24 | Quartz Micro Evaporating Dish 30ml | OD38mm*H38mm |
| 25 | Quartz Micro Evaporating Dish 50ml | OD45mm*H45mm |
| 26 | Quartz Micro Evaporating Dish 60ml | OD46mm*H49mm |
| 27 | Quartz Micro Evaporating Dish 70ml | OD48mm*H51mm |
| 28 | Quartz Micro Evaporating Dish 80ml | OD50mm*H53mm |
| 29 | Quartz Micro Evaporating Dish 90ml | OD52mm*H55mm |
| 30 | Quartz Micro Evaporating Dish 100ml | OD55mm*H58mm |
| 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 |
Ensures Maximum Data Integrity
The ultra-pure, non-reactive surface of the fused quartz guarantees that the crucible itself does not interfere with your analysis. This is crucial for sensitive applications like TGA, where it provides a stable, inert baseline, and for trace element analysis, where it prevents leaching and contamination, ensuring your results are accurate and trustworthy.
Designed for Safe & Easy Handling
The prominent, fire-polished flanged rim is a key ergonomic feature, providing a secure and stable gripping point for crucible tongs. This design minimizes the risk of slipping and dropping valuable samples, especially when transferring the crucible in and out of hot furnaces or analytical instruments.
Superior Reusability & Ease of Cleaning
Due to its extremely low porosity and smooth, non-stick surface, residues can be cleaned off easily and completely. The material’s high resistance to chemical attack means it can be rigorously cleaned with acids (excluding HF) and reused multiple times without degrading, offering excellent long-term value and a lower cost per analysis compared to disposable alternatives.
Unobstructed Visual Process Monitoring
Unlike opaque ceramic or metal crucibles, the crystal-clear transparency of quartz allows for direct visual observation of the sample throughout the entire process. You can easily monitor for color changes, melting, decomposition, or other physical transformations in real-time, providing valuable qualitative insights that complement your quantitative data.
Application Scenario
Source Holder for Thermal Evaporation (PVD)
In materials science and thin-film coating, these crucibles are used as “evaporation boats” or source holders inside a vacuum chamber. A small amount of high-purity material (e.g., a metal or a compound) is placed in the crucible and heated until it evaporates, creating a vapor stream that deposits a uniform thin film onto a substrate. The quartz’s ultra-high purity is essential to prevent contamination of the final coating.
Drying to Constant Weight in Gravimetric Analysis
This is a fundamental technique in analytical chemistry for accurately determining the mass of a substance. A sample is placed in the pre-weighed crucible and heated in a drying oven to remove all moisture. The crucible is then cooled in a desiccator and re-weighed. This process is repeated until a constant weight is achieved. The quartz’s thermal stability and chemical inertness ensure its own weight does not change, guaranteeing the accuracy of the final measurement.
Proximate Analysis of Coal and Biofuels
In the energy and mining industries, these crucibles are standard for determining the quality of solid fuels. Specific tests, such as measuring the “ash content” or “volatile matter,” involve heating a precise weight of a coal sample to very high temperatures (e.g., 900°C) in a furnace. The quartz crucible reliably withstands these extreme conditions and the corrosive atmosphere, providing consistent and accurate data for fuel grading.
Sample Holder in Bomb Calorimetry
To determine the calorific value (energy content) of a substance, a small, weighed sample is placed in the crucible, which is then sealed inside a high-pressure “bomb” filled with pure oxygen. The sample is ignited, and the resulting temperature rise of the surrounding water is measured. The quartz crucible is ideal because it is inert, withstands the intense heat of combustion without shattering, and does not react with the sample or contribute significantly to the heat measurement.
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.
Each material serves different needs. Quartz is the best choice for ultimate purity and thermal shock resistance, especially in applications like trace metal analysis or when rapid heating/cooling is required. Alumina (Ceramic) can withstand slightly higher temperatures but is more susceptible to thermal shock and can leach contaminants. Platinum offers the highest temperature resistance and is excellent for use with alkaline materials but is extremely expensive and can be poisoned or alloyed by certain metals (like Lead or Arsenic). For most high-purity, acidic, or neutral applications below 1200°C, quartz offers the best balance of performance and cost.
Our standard-sized micro crucibles are designed to be compatible with many popular thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) instruments from leading manufacturers. However, due to the variety of sample holder designs, we highly recommend that you check the required pan dimensions (diameter and height) in your instrument’s manual before ordering. If our standard sizes do not fit, we can easily fabricate custom crucibles to your exact specifications to ensure a perfect match.
While quartz has excellent thermal shock resistance, we strongly recommend against applying the direct, concentrated flame of a Bunsen burner to a single point on the crucible. This creates an intense thermal gradient that can, in rare cases, lead to stress fractures. The ideal method for heating is to place the crucible in a muffle furnace or on a ceramic triangle over a burner, which allows for more uniform heat distribution. This practice will significantly extend the life of your crucible and ensure the most consistent experimental results.
Laser Drilling of Quartz
Threaded Quartz Tube
External Thread on Quartz Tube
Internal Threaded Quartz Tube
Quartz Tube Slotted
Window on Quartz Tube
Angled Cut Quartz Tube
Quartz Tile
Quartz Tube with Window
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.
