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- Leak-Proof Infrared Quartz Fluorescence...
Leak-proof Infrared Quartz Fluorescence Cuvette with Stopper for Fluorescence Detection -TOQUARTZ®
Features of Infrared quartz fluorescence cuvette with stopper
TOQUARTZ® infrared quartz fluorescence cuvettes with stopper are manufactured from high-purity synthetic quartz, providing exceptional performance for spectroscopic applications. Our cuvettes combine precision manufacturing with premium materials to deliver reliable results for your analytical needs.
Precision Engineering & Design
- Precision-ground body with dimensional accuracy
- PTFE stopper for airtight sealing
- Polished optical surfaces (scratch and blemish-free)
Material Composition
- High-purity synthetic quartz (≥99.98% SiO₂)
- Premium grades up to 99.995% purity available
- Extremely low metal ion content
Optical Properties
- Exceptional transmission range (300nm-3500nm)
- No absorption peaks throughout transmission range
- Transmittance >80% (paired testing)
- Resistant to acids and alkalis(except HP)
- Temperature resistance up to 1100°C
- Low thermal expansion coefficient (5.5×10⁻⁷ /°C)
Technical Specifications & Dimensions of Infrared quartz fluorescence cuvette with stopper
Technical Specifications
| Property | Specification |
| 1. Physical Properties | |
| Density | 2.2 g/cm³ |
| Fracture Modulus | ≥350 MPa |
| Thermal Conductivity | 120-160 W/m·K |
| Thermal Expansion Coefficient | 5.5×10-7/℃ |
| Max Operating Temperature: | 1100°C |
| 2. Chemical Properties | |
| SiO₂ Content | ≥99.98% (up to 99.995%) |
| Chemical Resistance | Excellent (acids, alkalis) |
| OH Content | <30 ppm |
| Bubble/Inclusion Content | None visible |
| Water Absorption | Nil |
| 3. Optical Properties | |
| Transmission Range | 300-3500nm |
| Refractive Index (589.3nm) | 1.458 |
Size Chart
| Model | Description | Wavelength | Path Length | Volume | Transmittance | Outline Dimension |
| AT-BSM-2004 | 3.5ml Infrared quartz fluorescence cuvette with stopper | 300nm-3500nm | 10mm | 3.5ml | >80% (Paired Testing) | 12.5×12.5x45mm |
Solving Challenges with IR Quartz Fluorescence Cuvettes with Stopper
Infrared Quartz Fluorescence Cuvette with Stopper in Organic Solvent Fluorescence Analysis
Key Advantages
-
Prevents solvent loss during 30+ min fluorescence scans
PTFE stopper maintains solvent mass within ±1.2% over 45 minutes in ethanol-based assays. -
Minimizes concentration drift in volatile organic systems
Sample concentration deviation reduced from 18% to under 2% in methanol-based fluorescence tests. -
Enables reproducible fluorescence intensity in batch testing
Fluorescence signal CV (coefficient of variation) improved from 12.5% to 1.8% across 10 replicates.
TOQUARTZ® solution
A pharmaceutical R&D lab analyzing fluorophore-tagged compounds in acetonitrile reported 15–20% signal loss due to evaporation in open cuvettes during 40-minute scans. After switching to TOQUARTZ® sealed cuvettes, signal deviation dropped to <2.1%, enabling consistent quantification across 12 batches and reducing retest rates by 35%.
Infrared Quartz Fluorescence Cuvette with Stopper for Protein Fluorescence in Biotech Labs
Key Advantages
-
Blocks oxygen ingress during kinetic fluorescence assays
O₂-sensitive FITC-tagged protein retained 96.7% signal over 60 minutes with sealed cuvette. -
Reduces photobleaching in long-duration exposure
Fluorescence decay rate decreased from 28% to 4.5% under identical light exposure conditions. -
Maintains signal stability in low-concentration protein samples
Signal-to-noise ratio improved by 3.2× in 0.1 mg/mL BSA-FITC assays using sealed cuvettes.
TOQUARTZ® solution
A biotech lab conducting 1-hour kinetic fluorescence studies on tryptophan-labeled proteins observed 30% signal degradation due to oxidation and light exposure in open cuvettes. TOQUARTZ® sealed cuvettes preserved >95% signal integrity, enabling accurate kinetic modeling and reducing experimental variability by 42%.
Infrared Quartz Fluorescence Cuvette with Stopper in Environmental Pollutant Detection via Fluorescence
Key Advantages
-
Prevents photodegradation of PAHs in UV-exposed testing
Naphthalene fluorescence intensity retained 93.5% after 20 min exposure in sealed cuvette vs. 68% in open. -
Maintains sample volume in multi-sample batch workflows
Evaporation loss reduced from 0.35 mL to <0.02 mL per cuvette over 1 hour at 25°C. -
Enables ppb-level detection with minimal background interference
Background fluorescence reduced by 87% compared to screw-cap plastic cuvettes in pesticide assays.
TOQUARTZ® solution
An environmental testing lab analyzing PAHs in river water using fluorescence spectroscopy faced 25% signal loss due to photodegradation and evaporation during batch runs. After adopting TOQUARTZ® sealed cuvettes, signal retention improved to 94% across 24 samples, enabling detection limits down to 0.3 ppb and reducing false negatives by 60%.
Customization Services for TOQUARTZ® Infrared quartz fluorescence cuvette with stopper
Dimensional Customization
- Custom path lengths
- Special outer dimensions
- Modified internal volumes
- Specialized wall thickness
- Miniaturized designs for micro-samples
Material Specification
- Ultra-high purity options (99.995% SiO₂)
- Special grade for extended UV transmission
- Enhanced IR transmission formulations
- Low fluorescence background material
- Specialized thermal resistance grades
Sealing Options
- PTFE stoppers of various sizes
- Screw-cap designs
- Ground glass stoppers
- Flow-through adaptations
- Specialized seals for extreme conditions
Custom Design Process
Requirement Consultation
Discuss your specific needs, applications & technical parameters
Technical Drawing
Engineers create detailed CAD designs for your approval
Prototype Development
Fabrication of sample units for testing and validation
Testing & Refinement
Collaborative testing and design adjustments as needed
Production
Scaled manufacturing with comprehensive quality control
Usage Guide of Infrared quartz fluorescence cuvette with stopper
Proper Handling & Operation
- Always handle cuvettes by the frosted or non-optical sides to avoid fingerprints and contamination on optical surfaces.
- Insert and remove the PTFE stopper gently to avoid damaging the cuvette or creating quartz particles.
- Ensure the cuvette is properly positioned in the spectrometer with the optical path aligned correctly.
- Allow heated samples to cool before sealing with the stopper to prevent pressure build-up.
Cleaning & Maintenance
- Clean cuvettes immediately after use to prevent sample residue from drying or adhering to surfaces.
- Use appropriate solvents for cleaning (acetone, ethanol, or mild detergent solutions), followed by thorough rinsing with deionized water.
- Dry with compressed air or nitrogen, or air dry in a dust-free environment.
- Periodically inspect PTFE stoppers for wear and replace if necessary to maintain proper sealing.
Storage Recommendations
- Store cuvettes in their original protective cases or in dedicated cuvette racks to prevent scratches and damage.
- Keep in a clean, dry environment away from chemicals, dust, and excessive humidity.
- For long-term storage, consider using desiccant packets to prevent moisture accumulation.
- Avoid extreme temperature fluctuations which can induce stress in the quartz material.
Need Technical Assistance with Infrared Quartz Fluorescence Cuvettes?
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: How does the PTFE stopper ensure airtight sealing without affecting fluorescence readings?
A: The PTFE stopper is chemically inert and optically opaque, preventing solvent evaporation and oxygen ingress while avoiding background fluorescence. It is precision-fitted to the cuvette neck to maintain seal integrity without interfering with the optical path.
Q: What is the maximum solvent vapor pressure the stopper can withstand without leakage?
A: TOQUARTZ® IR quartz cuvettes with PTFE stoppers are tested to maintain seal integrity for solvents with vapor pressures up to 80 kPa at 25°C, including methanol, ethanol, and acetonitrile, under standard lab conditions.
Q: Can the stopper be autoclaved or reused after exposure to aggressive solvents?
A: Yes, the PTFE stopper is autoclavable up to 121°C and resistant to most organic solvents. However, for critical fluorescence assays, we recommend replacing the stopper after 10–15 uses to avoid micro-deformation or contamination.
Q: Are there compatibility issues with automated fluorescence readers or robotic arms?
A: TOQUARTZ® cuvettes follow standard outer dimensions (e.g., 12.5×12.5mm) and are compatible with most commercial fluorescence spectrometers and autosamplers. Custom dimensions can be provided for OEM integration.
Q: What is the lowest detectable concentration achievable using quartz ir cuvette with stopper in fluorescence assays?
A: In controlled lab tests, TOQUARTZ® sealed cuvettes enabled detection of FITC-labeled proteins at concentrations as low as 0.05 µg/mL, with signal-to-noise ratios exceeding 3:1, depending on instrument sensitivity.
Contact our engineering team for technical consultation and pricing. We’ll help you select the optimal specifications for your application requirements.