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Multi-Performance Quartz Combustion Boat for Laboratory Analysis -TOQUARTZ®
Features of Quartz Combustion Boat
Electrical Insulation
Excellent electrical insulation properties with volume resistivity of 10¹⁶ Ω·cm at 500°C, making these boats suitable for applications involving electrical heating elements.
Thermal Conductivity
High thermal conductivity (120-160 W/m·K) allows for efficient heat transfer during sample analysis, ensuring consistent heating profiles and accurate test results.
Chemical Resistance
Resistant to most acids, alkalis, and molten salts (except hydrofluoric acid and hot phosphoric acid). Maintains integrity during chemical reactions, preventing contamination of test samples.
- High Purity: ≥99.99% SiO₂ content
- Precise Dimension: ±0.1mm tolerance
- Withstands temperatures: 1200°C
Technical Specifications & Dimension of Fused Silica Combustion Boat
Technical Specifications of Quartz Glass Combustion Boat
Physical Properties
| Property | Value | Unit |
| Density | 2.2 | g/cm³ |
| Maximum Working Temperature | 1200 | °C |
| Thermal Expansion Coefficient | 5.5 × 10⁻⁷ | /°C |
| Thermal Conductivity | 120-160 | W/m·K |
| Hardness (Mohs) | 5.5-6.5 | – |
| Fracture Modulus | ≥ 350 | MPa |
Chemical Properties
| Property | Value | Unit |
| SiO₂ Content | ≥ 99.99 | % |
| Al₂O₃ | < 20 | ppm |
| Na₂O | < 15 | ppm |
| K₂O | < 10 | ppm |
| Fe₂O₃ | < 5 | ppm |
| Chemical Resistance | Resistant to most acids, bases, and salts (except HF and hot phosphoric acid) |
Optical Properties
| Property | Value | Unit |
| Refractive Index (589.3 nm) | 1.4585 | – |
| Transparency | Transparent to translucent | – |
| UV Transmission (254 nm) | > 80 | % |
Size of Fused Quartz Combustion Boat
| Model | Length (mm) | Width (mm) | Height (mm) | SiO₂ Purity (%) |
| AT-SY-Z1001 | 50 | 10 | 5 | 99.99 |
| AT-SY-Z1002 | 50 | 15 | 7.5 | 99.99 |
| AT-SY-Z1003 | 50 | 20 | 10 | 99.99 |
| AT-SY-Z1004 | 50 | 25 | 10 | 99.99 |
| AT-SY-Z1005 | 50 | 30 | 12.5 | 99.99 |
| AT-SY-Z1006 | 50 | 40 | 15 | 99.99 |
| AT-SY-Z1007 | 50 | 50 | 20 | 99.99 |
| AT-SY-Z1008 | 100 | 10 | 5 | 99.99 |
| AT-SY-Z1009 | 100 | 15 | 7.5 | 99.99 |
| AT-SY-Z1010 | 100 | 20 | 10 | 99.99 |
| AT-SY-Z1011 | 100 | 25 | 12.5 | 99.99 |
| AT-SY-Z1012 | 100 | 30 | 12.5 | 99.99 |
| AT-SY-Z1013 | 100 | 40 | 15 | 99.99 |
| AT-SY-Z1014 | 100 | 50 | 20 | 99.99 |
| AT-SY-Z1015 | 100 | 50 | 25 | 99.99 |
| AT-SY-Z1016 | 100 | 60 | 30 | 99.99 |
| AT-SY-Z1017 | 150 | 75 | 25 | 99.99 |
| AT-SY-Z1018 | 200 | 30 | 15 | 99.99 |
| AT-SY-Z1019 | 200 | 40 | 20 | 99.99 |
| AT-SY-Z1020 | 200 | 50 | 25 | 99.99 |
| AT-SY-Z1021 | 200 | 50 | 25 | 99.99 |
| AT-SY-Z1022 | 200 | 70 | 35 | 99.99 |
| AT-SY-Z1023 | 200 | 25 | 12.5 | 99.99 |
| AT-SY-Z1024 | 200 | 80 | 40 | 99.99 |
TOQUARTZ® Solving Critical Challenges with Quartz Combustion Boats
Quartz Glass Combustion Boats for Carbon-Sulfur Analysis Equipment
Key Advantages
-
Dimensional repeatability within ±0.1mm for automated feeders
→ Ensures 100% compatibility with LECO and Eltra auto-samplers without jamming. -
Surface roughness Ra ≤ 0.8μm for stable sample placement
→ Prevents sample rolling or shifting during combustion, improving test repeatability. -
Verified SiO₂ purity ≥ 99.995% with <5ppm Fe₂O₃
→ Eliminates background interference in ppm-level sulfur detection.
TOQUARTZ® solution
A German carbon-sulfur analyzer OEM faced 12% rejection rate due to dimensional mismatch with auto-feeders. TOQUARTZ delivered boats with ±0.1mm tolerance and Ra ≤ 0.8μm, reducing rejection to <1% and enabling 3,000+ units/month stable supply.
Fused Quartz Combustion Boats for Thermal Analysis and Material Testing
Key Advantages
-
Thermal expansion coefficient 5.5×10⁻⁷/°C for dimensional stability
→ Maintains shape under 800–1000°C ramp cycles in TGA systems. -
Trace metal content <10ppm total (Na, K, Fe, Al)
→ Prevents catalytic interference in decomposition kinetics of sensitive materials. -
Wall thickness tolerance ±0.05mm for uniform heat distribution
→ Reduces thermal gradient errors in gravimetric measurements by up to 6%.
TOQUARTZ® solution
A Japanese university lab reported 8% deviation in TGA mass loss curves due to uneven heating. TOQUARTZ supplied boats with ±0.05mm wall tolerance and <10ppm trace metals, improving curve consistency and enabling publication in peer-reviewed journals.
Fused Silica Combustion Boats for High-Volume Testing Laboratories
Key Advantages
-
Batch-to-batch dimensional deviation <0.08mm (verified across 10,000 pcs)
→ Ensures consistent fit in automated workflows across multiple shifts. -
24h dispatch rate for 80+ standard SKUs with MOQ ≥10pcs
→ Supports urgent replenishment for labs processing 500+ samples/day. -
Breakage rate <0.5% during international transit (based on 12-month data)
→ Minimizes operational downtime and replacement costs in high-throughput labs.
TOQUARTZ® solution
A U.S. third-party testing lab processing 1,200 samples/day faced 7-day delays from previous supplier. TOQUARTZ implemented rolling stock of 5 SKUs, shipped 6,000 pcs/month with <0.5% breakage, cutting downtime by 90% and saving $8,400/month in lost productivity.
TOQUARTZ® Customization Services for Quartz Glass Combustion Boat
Dimensional Customization
Customize length, width, height, and wall thickness to match your specific analytical instrument requirements or sample volumes.
- Length: 20mm to 1000mm
- Width: 20mm to 1000mm
- Height: 5mm to 500mm
- Wall thickness: 2mm to 20mm
- Si2O Purity: 99.95% to 99.99%
Special Design
Features
Incorporate custom design elements to enhance functionality for specialized analytical applications.
- Compartmentalized sections
- Handles for easier manipulation
- Tapered edges for specific instruments
- Special surface treatments
Performance Optimization
Custom modifications to enhance performance for specific analytical conditions or extreme environments.
- Enhanced thermal shock resistance
- Specialized surface finish
- Custom purity requirements
- Application-specific designs
Custom Design Process
Requirement Analysis
- TOQUARTZ®'s engineers begin by understanding your specific application needs for quartz combustion boats, including analyzer model compatibility, sample volume, and thermal conditions. We evaluate whether standard boats meet your requirements or if a custom solution is necessary.
Design & Prototyping
- We create detailed design specifications and fabricate prototype quartz boats for your evaluation. This allows for testing and refinement before committing to larger production runs.
Validation & Production
- After prototype approval, we establish quality control parameters and begin production. Each custom boat undergoes rigorous inspection to ensure it meets your specifications.
Ongoing Support
- We maintain your design specifications for future orders and offer technical support for implementation. Custom designs can be refined based on feedback from real-world use.
Usage Guide of Quartz Combustion Boat
Proper Handling and Loading
- Always handle quartz boats with clean tweezers or gloves to prevent contamination from skin oils or other contaminants.
- Distribute sample material evenly across the boat to prevent localized overheating and potential thermal stress.
- Avoid overfilling—maximum sample height should not exceed the boat walls to prevent spillage during analysis.
- Always inspect boats for cracks or damage before use, as microscopic defects can lead to failure during heating.
Temperature Considerations
- Avoid rapid temperature changes—heat and cool boats at a maximum rate of 5-7°C per minute to prevent thermal shock.
- Do not exceed the maximum working temperature of 1200°C for standard boats (higher-temperature custom options available upon request).
- Allow boats to cool completely before handling or cleaning to prevent thermal stress and potential injury.
- For applications requiring rapid heating/cooling cycles, consider thinner-walled custom boats designed for improved thermal shock resistance.
How to Clean Quartz Boats
- Remove residual material by soaking in appropriate solvents—acetone for organic residues, dilute acids (except HF) for inorganic compounds.
- For stubborn residues, use ultrasonic cleaning with appropriate solutions, followed by thorough rinsing with deionized water.
- Heat cleaning at 800-1000°C can effectively remove organic contaminants without chemical treatment (recommended for carbon analysis applications).
- Never use abrasive cleaners or brushes that can scratch the quartz surface and create nucleation sites for future contamination.
Storage Recommendations
- Store clean, dry boats in a dust-free container or desiccator to prevent contamination and moisture absorption.
- Use lint-free materials for separating stacked boats to prevent scratching and contamination between uses.
- For long-term storage, consider vacuum-sealed packaging to prevent contamination from environmental pollutants.
- Maintain an inventory system with batch tracking to ensure proper rotation and traceability for quality-sensitive applications.
Need Technical Consultation for Your Project?
your application or design a custom solution that meets your specific requirements.
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 a quartz combustion boat used for?
A: Quartz combustion boats are laboratory vessels used to hold solid samples during high-temperature analysis procedures, particularly in carbon-sulfur analyzers, thermal gravimetric analysis (TGA), and other analytical instruments requiring sample combustion. Their high purity and heat resistance make them ideal for applications where sample contamination must be minimized.
Q: What is the definition of a quartz boat in laboratory terms?
A: In laboratory terminology, a quartz boat is a high-purity fused silica (SiO₂) vessel with a rectangular or semi-cylindrical shape used to hold solid samples during high-temperature analytical procedures. The boat shape allows for easy loading, maximum sample exposure, and convenient handling while providing chemical inertness and thermal stability for accurate analytical results.
Q: What temperature can quartz boats withstand?
A: TOQUARTZ quartz combustion boats can withstand continuous operating temperatures up to 1200°C. The actual maximum temperature depends on specific application conditions, heating rate, and duration. For applications requiring temperatures above 1200°C, please consult our technical team for specialized high-temperature quartz formulations.
Q:How do I clean quartz boat after use?
A: For organic residues, soak in acetone followed by thorough rinsing with deionized water. For inorganic compounds, use appropriate acid solutions (except hydrofluoric acid). Ultrasonic cleaning is effective for stubborn residues. For carbon analysis applications, heat cleaning at 800-1000°C effectively removes organic contaminants. Avoid abrasive cleaners that can scratch the surface.
Q: What chemical substances should not be used with quartz boats?
A: Avoid hydrofluoric acid (HF) and hot phosphoric acid, which can attack the silica structure. Concentrated alkali solutions at high temperatures can also cause degradation. Certain molten salts and metal oxides may react with quartz at extreme temperatures. Consult our technical team if you’re uncertain about compatibility with specific chemicals or sample types.
Contact our engineering team for technical consultation and pricing. We’ll help you select the optimal specifications for your application requirements.