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Signal-Enhanced Quartz Micro Cuvette with Black Walls for Spectroscopy Applications -TOQUARTZ®
Features of Quartz Micro Cuvette with Black Walls
TOQUARTZ® black wall quartz micro cuvettes are manufactured to precise specifications for demanding analytical applications in spectroscopy. These cuvettes combine the superior optical properties of high-purity quartz with specialized design for micro-volume analysis.
Optical Performance
- Wide spectral range from 200nm to 2500nm with no absorption peaks
- Black walls reduce stray light and minimize background interference
- Polished optical surfaces for minimal light scattering and accurate readings
- Optimized for micro-volume analysis from 20μL to 200μL sample sizes
Material Properties
- High-purity synthetic quartz with ≥99.98% SiO₂ content
- Excellent chemical resistance to acids, bases, and organic solvents
- High thermal stability up to 100°C for routine laboratory use
- Precision manufacturing with dimensional tolerances within ±0.1mm
- Precision machining for dimensional accuracy
- Individual inspection for defects and optical clarity
- Rigorous quality control and optical testing
Technical Specifications & Dimensions of Quartz Micro Cuvette with
Black Walls
Technical Specifications
Physical Properties
| Parameter | Specification |
| Material | High-purity quartz (≥99.98% SiO2) |
| Tensile Strength | 50 MPa |
| Density | 2.2 g/cm³ |
| Thermal Expansion Coefficient | 5.5×10-7/℃ |
| Surface Finish | Polished optical faces |
| Wall Treatment | Black coating for light isolation |
Optical Properties
| Parameter | Specification |
| Transmission Range | 200-2500nm |
| UV Cutoff | <190nm |
| Refractive Index | 1.46 at 589.3nm |
| Dispersion | Abbe Value = 67.8 |
| Optical Homogeneity | ≤5×10⁻⁶ |
| Stray Light Reduction | >99% with black walls |
Chemical Properties
| Parameter | Specification |
| Acid Resistance | Excellent (except HF) |
| Alkali Resistance | Good up to pH 12 |
| Solvent Compatibility | Compatible with most organic solvents |
| Biocompatibility | Inert, non-reactive with biological samples |
Size Charts
| Model | Description | Wavelength | Path Length | Volume | Thermal Stability | Outline Dimension |
| AT-BSM-4021 | 20μl-200μl Quartz Micro Cuvette with Black Walls | 200nm-2500nm | 10mm | 20μl-200μl | 100℃ | 12.5×12.5x45mm |
| Model | Description | Wavelength | Path Length | Volume | Thermal Stability | Outline Dimension |
| AT-BSM-4010-1 | 50μl Quartz Micro Cuvette with Black Walls | 200nm-2500nm | 10mm | 50μl | 100℃ | 12.5×12.5x45mm |
| Model | Description | Wavelength | Path Length | Volume | Thermal Stability | Outline Dimension |
| AT-BSM-4041 | 50μl/100μl Quartz Micro Cuvette with Black Walls | 200nm-2500nm | 10mm | 50μl/100μl | 100℃ | 12.5×12.5x45mm |
| Model | Description | Wavelength | Path Length | Volume | Thermal Stability | Outline Dimension |
| AT-BSM-4040 | 106μl Quartz Micro Cuvette with Black Walls | 200nm-2500nm | 10mm | 106μl | 100℃ | 12.5×12.5x8mm |
TOQUARTZ® Solving Critical Challenges with Quartz Micro Cuvette with Black Walls
Quartz Micro Cuvette with Black Walls in Forensic Toxicology Screening
Key Advantages
-
Minimized false positives in fluorescence drug assays
Black walls reduced background signal by 78% in 532nm benzodiazepine screening. -
Stable readings in low-volume plasma samples
Maintains signal integrity in 50μL samples with <2% variation across replicates. -
Reduced spectral interference from biological matrices
Suppressed matrix-induced stray light by 65% compared to clear quartz cuvettes.
TOQUARTZ® solution
A forensic toxicology lab in Germany reported inconsistent results in saliva-based benzodiazepine screening using standard cuvettes, with a 17.6% false positive rate. After switching to TOQUARTZ® black wall micro cuvettes, background interference dropped significantly, reducing false positives to 2.1% and improving case report accuracy within 3 weeks of implementation.
Quartz Micro Cuvette with Black Walls in Photostability Testing of Light-Sensitive APIs
Key Advantages
-
Ambient light exclusion during UV exposure
Black walls blocked >92% of lateral light intrusion in 10mm pathlength tests. -
Improved accuracy in degradation kinetics
Reduced absorbance deviation by 6.3% in 72-hour photostability trials. -
Preserved spectral fidelity in micro-volume solvents
Maintained <1.5% signal drift in 100μL methanol-based API solutions.
TOQUARTZ® solution
A Japanese pharmaceutical R&D team observed overestimated degradation rates (avg. +9.1%) in UV absorbance tests of a photosensitive API using clear cuvettes. After adopting TOQUARTZ® black wall micro cuvettes, degradation curves aligned with HPLC benchmarks, reducing deviation to 1.2% and ensuring ICH Q1B photostability compliance for regulatory submission.
Quartz Micro Cuvette with Black Walls in Aflatoxin Fluorescence Detection for Food Safety Labs
Key Advantages
-
Enhanced detection of aflatoxin B1 at sub-ppb levels
Increased fluorescence signal-to-noise ratio by 6.8× at 365nm excitation. -
Suppressed solvent-induced background fluorescence
Reduced baseline noise by 71% in methanol-extracted peanut samples. -
Consistent quantification in 50μL micro-extracts
Achieved <3% RSD across 5 replicates at 0.05 ppb concentration.
TOQUARTZ® solution
A Polish food safety lab struggled to detect aflatoxin B1 below 0.2 ppb in corn flour using standard cuvettes, with high background from methanol matrix. After switching to TOQUARTZ® black wall micro cuvettes, baseline noise dropped by 71%, enabling consistent detection at 0.05 ppb and passing EU Regulation No 1881/2006 compliance testing in under 10 days.
TOQUARTZ® Customization Options for Quartz Micro Cuvette with
Black Walls
Dimensional Customization
- Custom internal volumes
- Modified external dimensions
- Custom path lengths
- Specialized shapes for instrument compatibility
Surface & Optical Modifications
- Special coatings for enhanced durability
- Anti-reflection treatments
- Partial black wall configurations
- Custom optical window orientations
Functional Enhancements
- Integration of filling ports
- Addition of stoppers or caps
- Temperature control adaptations
- Flow-through designs
Usage Guide of Quartz Micro Cuvette with Black Walls
Proper Handling & Cleaning
- Handle with care - Always hold cuvettes by the frosted or ribbed sides, never by the optical windows. Use lint-free gloves when possible.
- Basic cleaning - Rinse immediately after use with appropriate solvent, followed by distilled water. For aqueous solutions, use mild detergent if necessary.
- Thorough cleaning - For persistent residues, soak in 50% nitric acid solution (except for black walls), followed by thorough rinsing with distilled water.
- Drying - Air dry in dust-free environment or use compressed oil-free air. Never use heat drying for micro cuvettes.
Best Practices for Analysis
- Sample preparation - Ensure samples are free from particulates by filtering or centrifuging before measurement.
- Loading technique - Use appropriate micropipettes and avoid bubbles by loading slowly along the wall of the cuvette.
- Orientation - Ensure proper alignment in the instrument with optical windows perpendicular to the light path.
- Calibration - Regularly validate optical performance using reference standards appropriate for your application.
Storage Recommendations
- Store in original packaging or dedicated cuvette boxes in a dust-free environment
- Maintain room temperature conditions and avoid temperature fluctuations
- Ensure complete dryness before storage to prevent contamination or etching
- Periodically inspect for chips, cracks, or surface contamination before use
Need Engineering Support for Your Project?
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: Why are quartz micro cuvettes with black walls preferred for micro-volume UV-VIS applications?
A: Their black wall design minimizes optical interference, while the micro-volume chamber (20–200μL) ensures accurate absorbance readings without sample dilution.
Q: Can quartz micro cuvettes with black walls be used for highly light-sensitive compounds?
A: Yes, the black walls block lateral ambient light, making them ideal for photostability testing of APIs and other light-sensitive analytes.
Q: Do quartz micro cuvettes with black walls affect baseline correction in UV-VIS instruments?
A: No, they improve baseline stability by suppressing scattered light, especially in instruments with high-sensitivity detectors.
Q: Are quartz micro cuvettes with black walls compatible with standard spectrophotometers?
A: Yes, they follow the standard 12.5×12.5mm external dimension and 10mm pathlength, ensuring full compatibility with most UV-VIS and fluorescence instruments.
Q: Can quartz micro cuvettes with black walls be reused after cleaning?
A: Yes, they are reusable with proper cleaning protocols, but care must be taken to avoid damaging the black coating during acid or solvent exposure.
Contact our engineering team for technical consultation and pricing. We’ll help you select the optimal specifications for your application requirements.