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Anti-Reflection Enclosed Black‑Wall Quartz...

Black‑wall quartz flow cell cuvette with stainless steel connectors for inline OD & UV analysis

Black‑wall quartz flow cell cuvette with stainless steel connectors for online absorbance

Black‑wall quartz flow cell cuvette with stainless steel connectors for flow detection

Black‑wall quartz flow cell cuvette with stainless steel connectors for enzyme flow assays

Anti-Reflection Enclosed Black‑Wall Quartz Flow Cell Cuvette with Stainless Steel Connectors for Spectroscopic Accuracy -TOQUARTZ®

TOQUARTZ® Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors is engineered for precision continuous-flow spectroscopic analysis using synthetic quartz with a purity of ≥99.98% (up to 99.995% SiO₂). Its black-walled construction effectively blocks ambient light, significantly enhancing signal-to-noise ratio in low-concentration UV-Vis or OD measurements. Integrated with corrosion-resistant stainless steel inlet and outlet tubes, the cuvette ensures robust, leak-free connectivity for HPLC, FIA, and real-time process monitoring applications.

No MOQ

Custom Design

Factory Direct

Tech Support

Features of Black-wall Quartz Flow Cell Cuvette with
Stainless Steel Connectors

TOQUARTZ® Black-wall quartz flow cell cuvettes with stainless steel connectors deliver exceptional performance for spectroscopic applications requiring precision flow analysis. These cuvettes combine superior optical properties with robust fluid handling capabilities to meet the demands of modern analytical laboratories.

Material Excellence

Optical Performance

Flow Channel Design

TOQUARTZ® Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors

Technical Specifications & Dimensions of Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors

TOQUARTZ® flow-through cuvettes are manufactured to precise specifications for optimal performance in analytical applications. The following technical parameters define the optical, physical, and chemical characteristics of our standard products, with customization options available upon request.

Technical Specifications

Parameter	Specification
1. Physical Properties
Material	High-purity synthetic quartz
Purity	≥99.98%, up to 99.995% SiO2
Density	2.20 g/cm3
Hardness	5.5-6.5 Mohs
Thermal Expansion	5.5 × 10-7/°C (20-320°C)
2. Chemical Properties
Acid Resistance	Excellent (except HF)
Alkali Resistance	Good below 300℃
Organic Solvent Resistance	Excellent
Water Absorption	Nil
OH Content	<20 ppm
Metal Impurities	<10 ppm total
3. Optical Properties
Spectral Range	200-2500 nm
Refractive Index	1.458 (at 546.1 nm)
UV Cutoff	170 nm
UV Transmission (10mm)	>80% at 200nm
VIS Transmission (10mm)	>90% at 350-2000nm
Surface Finish	Optical grade polish

Size Chart

Model	Description	Path Length	Volume	Outline Dimension
AT-BSM-8028-1	16μl Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors	5mm	16μl	12.5×7.5x25mm

Model	Description	Path Length	Volume	Outline Dimension
AT-BSM-8005	30μl Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors, Compatible with Mindray BA-88A Chemistry Analyzer	10mm	30μl	12.5×12.5x35mm

Model	Description	Path Length	Volume	Outline Dimension
AT-BSM-8003	32μl Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors, Center Height 8.5mm	10mm	32μl	12.5×12.5x35mm

Model	Description	Path Length	Volume	Outline Dimension
AT-BSM-8027	64μl Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors	20mm	64μl	12.5×22.5x35mm

Model	Description	Path Length	Volume	Outline Dimension
AT-BSM-8024	96μl Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors	30mm	96μl	12.5×32.5x35mm

Model	Description	Path Length	Volume	Outline Dimension
AT-BSM-8028	180μl Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors	20mm	180μl	12.5×22.5x45mm

Model	Description	Path Length	Volume	Outline Dimension
AT-BSM-8003-1	800μl Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors	10mm	1750μl	12.5×12.5x35mm

Note: We offer custom specifications to meet your specific requirements. Contact our engineering team for consultation.

TOQUARTZ® Solving Challenges in Spectroscopic Analysis with Black-wall Quartz Flow Cell Cuvette with Stainless Steel Connectors

Inline Optical Density (OD) Monitoring in Microbial Fermentation Bioreactors

In biopharmaceutical and enzyme production industries, fermentation processes rely on real-time optical density monitoring to control microbial growth rates. Unlike traditional sampling, inline OD detection via flow-through cells allows uninterrupted process tracking. However, background ambient light within stainless steel bioreactor housings or reflections from media bubbles can distort OD readings—especially in low-density phases (OD<0.2). Traditional transparent flow cells often fail to suppress these signals, resulting in inaccurate growth curves or delayed harvesting decisions.

Key Advantages

Ambient Light Suppression
Black-wall design effectively blocks ambient light, ensuring accurate OD readings in low-density fermentation phases (OD<0.2), especially when installed in bioreactor environments prone to stray light interference.
Enhanced Signal-to-Noise Ratio (SNR)
Black-wall cuvettes minimize unwanted reflections from microbial media bubbles, maintaining consistent measurements for real-time biomass tracking without disruption during fermentation.
Stainless Steel Durability
Stainless steel connectors provide long-term corrosion resistance, offering compatibility with CIP/SIP protocols and ensuring reliable operation in harsh fermentation conditions.

TOQUARTZ® solution

A biopharmaceutical manufacturer in the U.S. experienced significant calibration errors with transparent flow cells used in fermentation monitoring. By switching to TOQUARTZ Black-wall quartz flow cells, they reduced OD measurement errors by 18% and improved process stability during low-density microbial growth phases, leading to faster harvesting decisions and optimized batch performance.

UV-Absorbance Detection in Continuous-Flow Photocatalytic Wastewater Treatment Systems

In advanced water treatment plants adopting continuous-flow photocatalysis (e.g., TiO₂/UV-based systems), UV detectors are deployed inline to monitor degradation of phenolic or organic pollutants. These systems often operate under direct sunlight or within UV chambers, causing stray radiation to infiltrate optical sensors. Transparent flow cells allow significant light leakage, degrading UV absorbance signals, especially near 220 nm where most organics absorb.

Key Advantages

Prevention of Stray UV Light
The black-wall exterior blocks UV light leakage, eliminating the interference of sunlight and internal system reflections that degrade signal accuracy in photocatalytic reactors.
High UV Transmission at Critical Wavelengths
Black-wall quartz cuvettes provide superior UV transmission (80%+ at 200 nm), which is crucial for monitoring pollutant degradation at wavelengths where phenolic compounds absorb most strongly.
Corrosion-Resistant Stainless Steel Connectors
The stainless steel inlet/outlet tubes ensure longevity and reliable performance under harsh operating conditions involving aggressive oxidants like hydrogen peroxide or ozone.

TOQUARTZ® solution

A European environmental agency using UV-based TiO₂ photocatalysis for wastewater treatment struggled with signal degradation caused by stray UV light in their transparent flow cells. By adopting TOQUARTZ Black-wall quartz flow cells, they saw a 30% improvement in signal clarity and 10% higher detection accuracy for phenol concentrations, enabling more reliable real-time monitoring of pollutant levels and reducing maintenance needs by 25%.

Flow-based Enzyme Kinetics Assays in Temperature-controlled Spectroscopy Chambers

Enzyme kinetics assays increasingly utilize microfluidic flow-through systems to observe substrate conversion in real-time, especially for fast catalytic reactions requiring high time-resolution and controlled temperature. Low-concentration substrate signals are often masked by internal light reflections, and many labs require customized low-volume (≤30 μL) flow cells with precise thermal stability and minimal carryover.

Key Advantages

Black-wall Design for Optimal Signal Clarity
The black-wall construction minimizes internal light reflections, enhancing the precision of enzyme kinetics assays by ensuring that low-concentration substrate signals are not masked by noise.
Customizable Pathlength and Volume
TOQUARTZ provides low-volume flow cells (≤30 μL) with highly customizable path lengths, perfect for high-resolution time-based measurements of rapid enzyme reactions.
Thermal Stability and Uniformity
With high thermal stability (up to 1000°C), these flow cells maintain consistent performance even under stringent temperature-controlled environments, ideal for temperature-sensitive enzyme studies.

TOQUARTZ® solution

A German research laboratory studying oxidoreductase enzyme activity in a temperature-controlled chamber faced challenges with traditional flow cells, which had poor signal-to-noise ratios. After switching to TOQUARTZ Black-wall quartz flow cells, they achieved 22% better reproducibility in enzyme kinetics assays, successfully reducing substrate carryover and enhancing reaction rate accuracy in real-time experiments.

Customization Solutions for Your Specific Applications

TOQUARTZ® specializes in designing and manufacturing custom black-wall quartz flow cell cuvettes with stainless steel connectors tailored to your specific analytical requirements. Our engineering team works directly with you to develop flow cells that integrate perfectly with your instruments and analytical methods.

Custom Flow Path Geometries

From standard Z-path configurations to specialized serpentine channels for extended optical paths, we design flow geometries optimized for your specific detection requirements. Custom internal volumes from 1 μL to 500 μL can be precisely manufactured.

Specialized Connection Options

We offer a variety of connection options beyond standard stainless steel tubing, including specialized fittings for microfluidic applications, high-pressure systems, or integration with existing equipment. Custom thread types, angles, and materials are available.

Specialized Engineering

For challenging applications requiring specialized performance characteristics, our engineers work with you to develop custom black-wall flow cells with enhanced optical, thermal, or chemical resistance properties tailored to your specific analytical challenges.

Product Usage Guideline

To maximize the performance and lifespan of TOQUARTZ® Black-wall quartz flow cell cuvettes with stainless steel connectors, please follow these guidelines for installation, operation, and maintenance. Proper handling ensures optimal analytical results and prevents premature wear or damage.

Installation Guidelines

Inspect the flow cell before installation, ensuring optical windows are clean and connectors are free from damage.
When connecting tubing, use appropriate fittings for your system (standard M6 threads or 10-32 UNF). Finger-tighten first, then use a wrench for an additional ¼ turn only.
Ensure the flow direction matches the arrow indicator on the cell body. Incorrect flow direction may cause air bubble trapping or incomplete sample flushing.
Mount the flow cell securely in your instrument holder, avoiding stress on the stainless steel tubes. Use the mounting holes if provided in your specific model.
Flush the system with an appropriate solvent before introducing samples to remove any air bubbles or manufacturing residues.

Operation Best Practices

Flow Rate Control: Stay within recommended flow rates (typically 0.1-5 mL/min) to prevent excessive pressure build-up. Higher flow rates may require custom high-pressure cells.
Temperature Limitations: Standard cells operate safely up to 80°C. For higher temperatures, request high-temperature versions with specialized seals.
Chemical Compatibility: While quartz is compatible with most chemicals, avoid hydrofluoric acid and concentrated hot alkali solutions which can attack quartz.
Pressure Limits: Standard cells withstand up to 100 bar (1450 psi). Monitor system pressure to prevent exceeding cell specifications.
Bubble Prevention: Degas mobile phases and samples properly. For persistent bubble issues, consider a flow cell with bubble trap design.

Maintenance & Cleaning

Regular Flushing: After each analytical run, flush the cell with an appropriate solvent to prevent sample residue build-up. For long-term storage, ensure the cell is completely dry.
Removing Protein Deposits: For biological applications, use enzyme cleaners (e.g., Tergazyme) followed by thorough water rinsing to remove protein deposits.
Cleaning Optical Windows: For external window cleaning, use lens-grade microfiber cloth with spectroscopic-grade methanol or acetone. Never use abrasive materials.
Connector Maintenance: Periodically inspect the stainless steel connectors for corrosion or damage. Replace ferrules if leaks develop.
Avoiding Contamination: When handling the cell, wear powder-free gloves to prevent fingerprints on optical surfaces.

Storage & Handling

Storage Environment: Store in a clean, dry environment at room temperature. Avoid extreme temperature fluctuations.
Protection During Storage: Use the original packaging or a dust-free container. Install protective caps on connectors when not in use.
Handling Precautions: Always handle with care, avoiding direct contact with the optical windows. Support by the cell body rather than by the connector tubes.
Long-term Storage: For long-term storage, flush with clean solvent and dry completely. Consider filling with inert gas (nitrogen) for maximum protection.
Transportation: When shipping, use foam-padded containers to prevent mechanical shock. Clearly mark packages as containing fragile optical components.

Need Engineering Support for Your Black-wall Quartz Flow Cell Application?

Our technical team provides complimentary consultation to help you
select the optimal black‑wall quartz flow cell cuvette with stainless steel connectors configuration for your specific analytical requirements.

Contact Our Engineer

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.

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Specialized Rhombus Black-Wall Quartz Flow-Through Cells for Chemical Processing -TOQUARTZ®

Process-Integrated Transparent Quartz Flow Cell with M5 Threaded Connectors for Industrial Analytics -TOQUARTZ®

Low-Drift Quartz Flow Cell for ZETA Potential Analyzers in Academic Labs -TOQUARTZ®

Optical Quartz Flow Through Cuvette Both Ends Open for Research Facilities -TOQUARTZ®

Advanced Optical Path Quartz Flow Cell with Inlet and Outlet Tubings for Spectroscopy Applications -TOQUARTZ®

FAQ

Q: Why choose a black-wall quartz flow cell instead of a transparent one for OD or UV-Vis measurements?

A: The Black‑wall quartz flow cell cuvette with stainless steel connectors eliminates ambient light interference, which is critical for accurate low-concentration OD or UV absorbance readings. Unlike transparent cells, the black walls prevent stray light reflections within the optical path. This ensures a higher signal-to-noise ratio during inline fermentation or photocatalysis monitoring. It is especially beneficial for early-phase microbial detection (OD<0.2).

Q:Can stainless steel connectors withstand aggressive chemicals in photoreactor applications?

A: Yes, the stainless steel connectors used in the Black‑wall quartz flow cell cuvette with stainless steel connectors are corrosion-resistant and compatible with most oxidants such as H₂O₂ and O₃. This makes the cuvette ideal for UV-based photocatalytic degradation systems. The fittings also provide robust fluidic sealing under continuous-flow operation.

Q: What is the advantage of using stainless steel over polymeric tube interfaces in spectroscopy setups?

A: Stainless steel connectors offer superior mechanical strength, temperature stability, and chemical resistance compared to polymer fittings. In the Black‑wall quartz flow cell cuvette with stainless steel connectors, they provide secure integration with high-pressure or heated fluidic systems. This ensures long-term durability in both bench-top and industrial analyzers.

Q: Does the black-wall design cause any interference with fluorescence measurements?

A: No, in fact it improves fluorescence signal clarity by eliminating reflected excitation light. The Black‑wall quartz flow cell cuvette with stainless steel connectors minimizes cross-talk and enhances detection of weak fluorescence signals. This is especially beneficial in flow-based fluorometric enzyme or protein assays.

Q: Is the black-wall quartz cuvette suitable for UV detection at wavelengths below 220 nm?

A: Absolutely. The Black‑wall quartz flow cell cuvette with stainless steel connectors is fabricated from synthetic quartz with excellent UV transmission down to 190 nm. Its black wall suppresses background radiation, which is particularly useful for accurate detection of phenolic compounds and organic pollutants at ~210–220 nm.

Contact our engineering team for technical consultation and pricing. We’ll help you select the optimal specifications for your application requirements.

Anti-Reflection Enclosed Black‑Wall Quartz Flow Cell Cuvette with Stainless Steel Connectors for Spectroscopic Accuracy -TOQUARTZ®