Transparent Quartz Crucibles for Laboratory for Laboratory & Material Analysis -TOQUARTZ®
Properties of Transparent Quartz Crucibles
TOQUARTZ transparent quartz crucibles are manufactured using high-purity silica, creating laboratory vessels with exceptional performance characteristics.
High Temperature Resistance
Operating temperature exceeds 1100°C with minimal thermal expansion (coefficient of 0.56×10-6/°C at 25-300°C). This superior thermal shock resistance makes these crucibles ideal for rapid heating and cooling cycles common in research and testing environments.
Optical Transparency
Excellent light transmission properties with 92-93% transparency in the visible spectrum (450-780nm) at 1.0mm thickness. This optical clarity allows for direct visual monitoring of reactions and processes inside the crucible, critical for optical instrument development.
Chemical Resistance
Resistant to most acids, bases, and corrosive environments. Only hydrofluoric acid and hot phosphoric acid will cause significant degradation, making these crucibles suitable for a wide range of chemical reactions and analytical processes.
- Excellent Thermal Stability
- Optical Transmission
- Superior Chemical Resistance
Dimensions & Technical Specifications of Transparent Quartz Crucibles
Size of of Arc-Shaped Quartz Crucibles
| Model | Capacity (ml) | Outer Dia. (mm) | Bottom Dia. (mm) | Height (mm) | Wall Thickness (mm) | Purity |
| AT-QTZ-B001 | 5 | 25 | 18 | 31 | 1.5 | 99%-99.99% |
| AT-QTZ-B002 | 5 | 25 | 18 | 40 | 1.5 | 99%-99.99% |
| AT-QTZ-B003 | 10 | 30 | 23 | 42 | 2 | 99%-99.99% |
| AT-QTZ-B004 | 10 | 30 | 23 | 53 | 2 | 99%-99.99% |
| AT-QTZ-B005 | 20 | 35 | 25 | 45 | 2 | 99%-99.99% |
| AT-QTZ-B006 | 20 | 35 | 25 | 59 | 2 | 99%-99.99% |
| AT-QTZ-B007 | 30 | 40 | 30 | 54 | 2 | 99%-99.99% |
| AT-QTZ-B008 | 30 | 40 | 30 | 68 | 2 | 99%-99.99% |
| AT-QTZ-B009 | 50 | 45 | 33 | 63 | 2 | 99%-99.99% |
| AT-QTZ-B010 | 50 | 45 | 33 | 75 | 2 | 99%-99.99% |
| AT-QTZ-B011 | 100 | 54 | 39 | 84 | 2 | 99%-99.99% |
| AT-QTZ-B012 | 100 | 54 | 39 | 100 | 2 | 99%-99.99% |
| AT-QTZ-B013 | 150 | 60 | 43 | 90 | 2 | 99%-99.99% |
| AT-QTZ-B014 | 150 | 60 | 43 | 105 | 2 | 99%-99.99% |
| AT-QTZ-B015 | 200 | 69 | 46 | 91 | 2.5 | 99%-99.99% |
| AT-QTZ-B016 | 200 | 69 | 46 | 110 | 2.5 | 99%-99.99% |
| AT-QTZ-B017 | 250 | 75 | 50 | 110 | 2.5 | 99%-99.99% |
| AT-QTZ-B018 | 250 | 75 | 50 | 130 | 2.5 | 99%-99.99% |
| AT-QTZ-B019 | 300 | 80 | 51 | 111 | 2.5 | 99%-99.99% |
| AT-QTZ-B020 | 300 | 80 | 51 | 130 | 2.5 | 99%-99.99% |
| AT-QTZ-B021 | 500 | 88 | 67 | 137 | 2.5 | 99%-99.99% |
| AT-QTZ-B022 | 500 | 88 | 67 | 160 | 2.5 | 99%-99.99% |
Size of of Cylindrical Quartz Glass Crucibles
| Model | Capacity (ml) | Outer Dia. (mm) | Height (mm) | Wall Thickness (mm) | Purity |
| AT-QTZ-A001 | 0.7 | 20 | 4 | 1.5 | 99%-99.99% |
| AT-QTZ-A002 | 0.6 | 12 | 8 | 1.5 | 99%-99.99% |
| AT-QTZ-A003 | 0.9 | 12 | 12 | 1.5 | 99%-99.99% |
| AT-QTZ-A004 | 0.8 | 12 | 10 | 1.5 | 99%-99.99% |
| AT-QTZ-A005 | 0.9 | 20 | 5 | 1.5 | 99%-99.99% |
| AT-QTZ-A006 | 0.7 | 12 | 10 | 1.5 | 99%-99.99% |
| AT-QTZ-A007 | 1.4 | 18 | 8 | 1.5 | 99%-99.99% |
| AT-QTZ-A008 | 1.3 | 11 | 20 | 1.5 | 99%-99.99% |
| AT-QTZ-A009 | 1.6 | 12 | 20 | 1.5 | 99%-99.99% |
| AT-QTZ-A010 | 1.7 | 9 | 40 | 1.5 | 99%-99.99% |
| AT-QTZ-A011 | 1.5 | 13 | 25 | 1.5 | 99%-99.99% |
| AT-QTZ-A012 | 1.3 | 10 | 25 | 1.5 | 99%-99.99% |
| AT-QTZ-A013 | 5 | 20 | 20 | 1.5 | 99%-99.99% |
| AT-QTZ-A014 | 2 | 30 | 5 | 1.5 | 99%-99.99% |
| AT-QTZ-A015 | 6 | 22 | 20 | 1.5 | 99%-99.99% |
| AT-QTZ-A016 | 3.5 | 18 | 18 | 1.5 | 99%-99.99% |
| AT-QTZ-A017 | 4 | 16 | 28 | 1.5 | 99%-99.99% |
| AT-QTZ-A018 | 0.5 | 15 | 5 | 1.5 | 99%-99.99% |
| AT-QTZ-A019 | 1.2 | 15 | 10 | 1.5 | 99%-99.99% |
| AT-QTZ-A020 | 2.6 | 15 | 20 | 1.5 | 99%-99.99% |
| AT-QTZ-A021 | 3.7 | 17 | 21 | 1.5 | 99%-99.99% |
| AT-QTZ-A022 | 5.2 | 14 | 44 | 1.5 | 99%-99.99% |
| AT-QTZ-A023 | 6 | 32 | 10 | 2 | 99%-99.99% |
| AT-QTZ-A024 | 2 | 10 | 40 | 2 | 99%-99.99% |
| AT-QTZ-A025 | 6 | 15 | 50 | 2 | 99%-99.99% |
| AT-QTZ-A026 | 8 | 28 | 17 | 2 | 99%-99.99% |
| AT-QTZ-A027 | 6 | 35 | 8.5 | 2 | 99%-99.99% |
| AT-QTZ-A028 | 7 | 16 | 50 | 2 | 99%-99.99% |
| AT-QTZ-A029 | 12 | 54 | 8 | 2 | 99%-99.99% |
| AT-QTZ-A030 | 6 | 17 | 37 | 2 | 99%-99.99% |
| AT-QTZ-A031 | 9 | 16 | 60 | 2 | 99%-99.99% |
| AT-QTZ-A032 | 7.5 | 20 | 30 | 2 | 99%-99.99% |
| AT-QTZ-A033 | 7 | 22 | 25 | 2 | 99%-99.99% |
| AT-QTZ-A034 | 10 | 25 | 25 | 2 | 99%-99.99% |
| AT-QTZ-A035 | 9 | 20 | 40 | 2 | 99%-99.99% |
| AT-QTZ-A036 | 12 | 19 | 58 | 2 | 99%-99.99% |
| AT-QTZ-A037 | 16 | 30 | 28 | 2 | 99%-99.99% |
| AT-QTZ-A038 | 17 | 47 | 13 | 2 | 99%-99.99% |
| AT-QTZ-A039 | 20 | 23 | 60 | 2 | 99%-99.99% |
| AT-QTZ-A040 | 17 | 30 | 30 | 2 | 99%-99.99% |
| AT-QTZ-A041 | 24.5 | 25 | 60 | 2 | 99%-99.99% |
| AT-QTZ-A042 | 23 | 35 | 30 | 2 | 99%-99.99% |
| AT-QTZ-A043 | 24 | 28 | 58 | 2 | 99%-99.99% |
| AT-QTZ-A044 | 28 | 35 | 35 | 2 | 99%-99.99% |
| AT-QTZ-A045 | 30 | 28 | 58 | 2 | 99%-99.99% |
| AT-QTZ-A046 | 35 | 30 | 60 | 2 | 99%-99.99% |
| AT-QTZ-A047 | 39 | 36 | 45 | 2 | 99%-99.99% |
| AT-QTZ-A048 | 37 | 40 | 35 | 2 | 99%-99.99% |
| AT-QTZ-A049 | 36 | 26 | 82 | 2 | 99%-99.99% |
| AT-QTZ-A050 | 43 | 40 | 40 | 2 | 99%-99.99% |
| AT-QTZ-A051 | 41 | 40 | 40 | 2.5 | 99%-99.99% |
| AT-QTZ-A052 | 54 | 40 | 50 | 2 | 99%-99.99% |
| AT-QTZ-A053 | 52 | 40 | 50 | 2.5 | 99%-99.99% |
| AT-QTZ-A054 | 63 | 40 | 60 | 2.5 | 99%-99.99% |
| AT-QTZ-A055 | 130 | 40 | 120 | 2.5 | 99%-99.99% |
| AT-QTZ-A056 | 150 | 60 | 60 | 2.5 | 99%-99.99% |
Size of of Square Fused Quartz Crucibles
| Model | Length (mm) | Width (mm) | Height (mm) | Wall Thickness (mm) | Purity |
| AT-QTZ-C001 | 50 | 10 | 10 | 2-3 | 99%-99.99% |
| AT-QTZ-C002 | 100 | 10 | 10 | 2-3 | 99%-99.99% |
| AT-QTZ-C003 | 50 | 15 | 10 | 2-3 | 99%-99.99% |
| AT-QTZ-C004 | 100 | 15 | 10 | 2-3 | 99%-99.99% |
| AT-QTZ-C005 | 50 | 20 | 15 | 2-3 | 99%-99.99% |
| AT-QTZ-C006 | 100 | 20 | 15 | 2-3 | 99%-99.99% |
| AT-QTZ-C007 | 50 | 30 | 20 | 2-3 | 99%-99.99% |
| AT-QTZ-C008 | 100 | 30 | 20 | 2-3 | 99%-99.99% |
| AT-QTZ-C009 | 50 | 40 | 25 | 2-3 | 99%-99.99% |
| AT-QTZ-C010 | 100 | 40 | 25 | 2-3 | 99%-99.99% |
| AT-QTZ-C011 | 50 | 50 | 30 | 2-3 | 99%-99.99% |
| AT-QTZ-C012 | 100 | 50 | 30 | 2-3 | 99%-99.99% |
| AT-QTZ-C013 | 50 | 50 | 50 | 2-3 | 99%-99.99% |
| AT-QTZ-C014 | 100 | 100 | 30 | 2-3 | 99%-99.99% |
| AT-QTZ-C015 | 100 | 100 | 50 | 2-3 | 99%-99.99% |
| AT-QTZ-C016 | 100 | 100 | 100 | 2-3 | 99%-99.99% |
| AT-QTZ-C017 | 200 | 100 | 50 | 2-3 | 99%-99.99% |
Technical Specifications of Transparent Quartz Crucibles
| Chemical Composition & OH Content | (ppm) | Cr | Ge | Fe | Mg | Ti | Ca | Al | Na | Li | K | OH |
| 20 | 0.4 | 1.5 | 0.4 | 100 | 1 | 16 | 2.3 | 0.5 | 2 | ＜25 | ||
| Physical Properties | Property | Value | Property | Value | Property | Value | Property | Value | Property | Value | Property | Value |
| Density (20°C) | 2.2 × 10³ kg·m⁻³ | Coefficient of expansion (25-300°C) | 0.56 × 10⁻⁶ °C⁻¹ | Softening point | 1630°C | Annealing point | 1180°C | Strain point | 1100°C | Young’s modulus | 7.3 × 10⁵ Pa | |
| Spectral Transmission at 1.0mm Thickness (%) | ＜220nm | 230-280nm | 290-330nm | 350nm | 450nm | 550nm | 590nm | 780nm | ||||
| 0 | ＜15 | 0 | 15 | 88 | 92 | 93 | 93 | |||||
TOQUARTZ® Solving Challenges with Transparent Quartz Crucibles
Transparent Quartz Crucibles for Precision Laboratory Equipment
Key Advantages
- TOQUARTZ® crucibles maintain dimensional tolerance within ±0.05mm for critical instrument integration.
- Each crucible is tested to ensure ≥92% light transmission at 550nm for optical path consistency.
- Wall thickness variation is controlled within 0.03mm across production batches to ensure calibration repeatability.
TOQUARTZ® solution
A German analytical instrument OEM reported calibration drift due to inconsistent crucible wall thickness, causing ±0.2mm deviation in optical alignment.
TOQUARTZ® supplied crucibles with certified ±0.05mm tolerance and ≤0.03mm wall deviation, restoring calibration stability and reducing instrument rejection rate by 87%.
Transparent Quartz Crucibles for Academic Research Applications
Key Advantages
- TOQUARTZ® crucibles are batch-tested with ICP-MS to ensure Fe content ≤1.5ppm for trace analysis compatibility.
- Hydroxyl content is stabilized below 25ppm to prevent interference in high-temperature gas-phase reactions.
- Each batch includes CoA verifying Al content ≤16ppm, suitable for organometallic and photonic research.
TOQUARTZ® solution
A US-based university lab encountered inconsistent catalytic activity due to Fe contamination (>5ppm) from local suppliers.
TOQUARTZ® provided crucibles with ICP-MS verified Fe ≤1.5ppm and full CoA, enabling reproducible results and successful publication in ACS Catalysis.
Transparent Quartz Crucibles for High Temperature Analytical Testing
Key Advantages
- TOQUARTZ® crucibles maintain structural integrity up to 1150°C under continuous load.
- Ultra-low expansion coefficient minimizes stress during rapid heating cycles in analytical instruments.
- Each crucible is annealed above 1180°C to relieve internal stress and prevent microcrack propagation.
TOQUARTZ® solution
A Canadian testing lab reported 12% crucible failure rate during 1100°C TGA runs, causing 3–4 days/month of downtime.
TOQUARTZ® supplied annealed crucibles with verified deformation resistance at 1150°C, reducing failure rate to <1% and restoring full testing throughput.
Customization Services for TOQUARTZ® Transparent Quartz Crucibles
Dimensional Customization
- Custom diameters, height and wall thickness
- Special height-to-diameter ratios
- Specialized shapes beyond standard offerings
Material Modifications
- Grade selection (JGS-1, JGS-2, JGS-3)
- Specific OH content requirements
- Controlled impurity levels for specialized applications
- UV or IR transmission optimization
Special Features
- Added spouts or pouring lips
- Custom lids or covers
- Surface treatments (polishing, etching)
- Specialized markings or graduations
Material Specification Note
When requesting custom transparent quartz crucibles, please specify your material requirements. TOQUARTZ offers JGS-1, JGS-2, and JGS-3 grade quartz with varying spectral transmission characteristics. For applications with specific wavelength requirements, please include this information in your inquiry for optimal material selection.
TOQUARTZ® Customization Process
Submit your technical requirements or drawings. Our engineers will review and provide feedback on feasibility.
Receive detailed design specifications and pricing within 48 hours for your approval.
After approval, manufacturing begins with rigorous quality control. Typical custom orders ship within 7-14 days.
Usage Guidelines for Transparent Quartz Crucibles
Handling and Storage
- Handle with clean gloves to prevent fingerprint contamination
- Store in clean, dust-free environment
- Avoid direct contact with abrasive surfaces
- Use dedicated storage containers for unused crucibles
- Keep separated from other labware to prevent scratches
Chemical Compatibility
- Compatible with most acids except hydrofluoric acid
- Avoid hot phosphoric acid which can cause erosion
- Alkali metals and their oxides can react at high temperatures
- Rinse thoroughly after use with corrosive materials
- Prevent cross-contamination by dedicated use per application
Temperature Control
- Avoid rapid temperature changes exceeding 200°C/minute
- Pre-heat large crucibles gradually to prevent thermal shock
- Do not exceed maximum operating temperature (1100°C)
- Allow to cool naturally after high-temperature use
- Use appropriate thermal insulation for temperature stability
Cleaning & Maintenance
- Clean with dilute acids followed by deionized water rinse
- For organic residues, use acetone followed by alcohol rinse
- Avoid abrasive cleaning materials that can scratch surface
- Air dry or use clean, low-lint tissues
- Inspect regularly for cracks or damage before reuse
Need Technical Consultation?
Get expert advice on material selection, design specifications, and process optimization for your laboratory needs.
Why Partner with TOQUARTZ
Direct Factory Advantage
As a direct manufacturer, we can cut out the numerous intermediate links.
Engineering Expertise
Technical team guides clients from material selection to design optimization, translating specs into deliverables.
Flexible Manufacturing
Handling standard & custom orders via small-batch expertise and prototyping rigor to meet urgent deadlines.
Quality
Assurance
Pre-shipment 3-step validation:
1. dimensional accuracy,
2. material purity ,
3. performance thresholds
Global Supply Chain
Reliable global logistics to industrial hubs (DE/US/JP/KR priority) with trackable milestones.
Releted Products
As a specialized manufacturer with direct factory capabilities, TOQUARTZ provides both standard and custom quartz solutions with engineering support throughout the specification and implementation process.
FAQ
Q: What is the maximum operating temperature for transparent quartz crucibles?
A: TOQUARTZ® transparent quartz crucibles can operate at temperatures up to 1100°C continuously. The strain point is 1100°C, the annealing point is 1180°C, and the softening point is 1630°C. For applications requiring temperatures above 1100°C, please consult with our technical team for specific recommendations.
Q: What chemicals are incompatible with transparent quartz crucibles?
A: TOQUARTZ® Quartz crucibles are resistant to most chemicals but are attacked by hydrofluoric acid (HF) and hot phosphoric acid. Alkali metals and their oxides can also react with quartz at high temperatures. For applications involving these substances, alternative materials should be considered.
Q: How do I select the right transparent quartz crucible for my application?
A: Selection depends on your specific application requirements. Consider: (1) Temperature range, (2) Chemical environment, (3) Required capacity/dimensions, (4) Purity requirements, and (5) Optical properties needed. Our technical team can assist with selection based on your process parameters to ensure optimal performance.
Q: What testing and quality control measures are applied to transparent quartz crucibles?
A: Each batch undergoes comprehensive testing including: dimensional verification using precision measuring instruments, visual inspection for defects under polarized light, material composition analysis, thermal shock resistance testing, and for high-purity applications, trace element analysis using ICP-MS. Test certificates are available upon request.
Q: How should I clean transparent quartz crucibles after use?
A:For general cleaning, use a mild acid solution (except HF) followed by thorough rinsing with deionized water. For organic residues, clean with acetone followed by an alcohol rinse. Avoid abrasive cleaning methods that can scratch the surface. For stubborn deposits, a gentle soak in appropriate solvents is recommended rather than mechanical cleaning.
Contact our engineering team for technical consultation and pricing. We’ll help you select the optimal specifications for your application requirements.