Wholesale Micro Capillary Quartz Tube Supplier & Suppliers
Precision thermal redrawing, high-purity synthetic silica (JGS1/JGS2/JGS3), and customized capillary microbore geometries designed for mass production, advanced microfluidics, analytical chromatography, and optoelectronics.
High-Precision Fused Silica & Quartz Components
Engineered to exact geometric tolerances, optical transparency ranges, and severe operating environments. Direct wholesale supply from verified manufacturing lines.
Micro Capillary Quartz Tubing: Material Purity & Redrawing Mastery
A comprehensive technical perspective on mechanical resilience, inner bore smoothness, and dimensional consistency across mass-scale wholesale production.
Synthetic vs. Natural Fused Silica
Micro capillary quartz tubes are drawn from preforms of exceptional purity. Synthetic silica (JGS1) maintains hydroxyl ion (OH⁻) concentrations optimized for deep ultraviolet transmittance down to 185 nm. Natural quartz (JGS2/JGS3) offers high thermal resistance up to 1,200°C continuous operation, making it ideal for severe industrial thermometry and fluidic isolation.
Sub-Micron Dimensional Stability
Utilizing high-stability vertical thermal draw towers with continuous multi-axis laser micrometer feedback, outer diameters (OD down to 0.1mm) and inner diameters (ID down to 5μm) are continuously monitored. Concentricity deviations are maintained under 1.5%, guaranteeing uniform laminar fluid flows and minimizing phase shift in optical waveguides.
Chemical Inertness & Surface Finish
Unlike borosilicate or metallic alternatives, fused quartz presents a chemically inert internal surface that resists acid leaching, saline degradation, and extreme solvent contamination. Fire-polished internal bore walls achieve a nanoscale surface roughness (Ra < 0.8 nm), eliminating turbulent mixing and analyte adhesion during electrophoresis analysis.
| Capillary Grade | Material Matrix | Spectral Cut-Off | Inner Bore Range (ID) | Concentricity Metric | Primary Industrial Use |
|---|---|---|---|---|---|
| JGS1 High-UV | Synthetic Fused Silica | 185 nm – 2,500 nm | 5 µm – 500 µm | < 1.0% | CE, HPLC, Deep UV Waveguides |
| JGS2 Optical | Natural Fused Quartz | 220 nm – 2,500 nm | 20 µm – 2.0 mm | < 1.5% | Fluidics, Sight Microtubes, Fiber Couplers |
| JGS3 Low-OH IR | Electric Fused Silica | 260 nm – 3,500 nm | 50 µm – 3.0 mm | < 1.8% | IR Spectroscopy Sensors, Thermal Probes |
| Fluorine-Doped | Modified Silica Core | Wideband (Depressed Index) | Custom Calibrated | < 0.8% | Specialty Optical Fibers, Telecommunications |
China Factory Direct Supply Chain & Global Procurement Agility
Combining complete vertical integration from silica ingot selection to final cleanroom packaging. Why global high-tech OEMs partner with our facility in Tianjin, China.
Raw Material Reserve & Ingot Control
Our direct supply ties to premium raw quartz mines and synthetic silica producers insulate wholesale clients from global raw material bottlenecks, guaranteeing constant stock, reproducible ingot purity, and volume pricing stability.
Flexible Redrawing & Rapid Tooling
With multiple in-house redrawing rigs and oxyhydrogen lathe lines, transitioning from prototype micro capillary tubes to multi-million-piece batch runs occurs without expensive third-party retooling overhead.
Export Logistics & Shockproof Packing
High-aspect-ratio micro capillary quartz tubes are prone to handling fracture if improperly packed. We utilize custom antistatic slotted trays, hermetically sealed cleanroom bags, and drop-tested shock absorbers designed for reliable air freight worldwide.
Mission-Critical Applications for Quartz Microcapillaries
From analytical science to modern optoelectronics, our microbore quartz glass tubes perform where conventional materials degrade.
Chromatography & CE
Serving as column tubing in Gas Chromatography (GC) and Capillary Zone Electrophoresis (CZE) where optical clarity and pressure limits exceeding 500 bar are non-negotiable.
Microfluidic Lab-on-a-Chip
Supplying calibrated conduits for droplet generation, flow cytometry hydrofocusing channels, and cell sorter nozzles requiring absolute optical transparency.
Fiber Optic Ferrules & Splices
Microbore quartz ferrules and alignment capillaries matching the refractive index and thermal expansion coefficient of high-power silica laser delivery fibers.
High-Temp Pyrometry Probes
Protective sheaths for semiconductor epitaxy reactors, aerospace thermal measurement, and corrosive molten fluid thermocouple encapsulation.
Localization Support & Global Compliance Assurance
Ensuring frictionless importing, safety certification, and full traceability for Tier-1 technology companies worldwide.
RoHS, REACH & Conflict-Free
Every shipment is accompanied by comprehensive full-substance declaration reports. Our silica glass matrices are 100% compliant with EU RoHS Directives (2011/65/EU and 2015/863), free from SVHCs per REACH Regulation (EC No 1907/2006).
Customs & Tariffs Documentation
We provide accurate Harmonized System code designations (HS Code 7002.31 for fused quartz/silica tubes) along with Certificates of Origin (CO, Form E, Form A, RCEP), mitigating processing delays and minimizing import duty impact for procurement desks.
Multilingual Engineering Bridge
Our sales engineering team acts as an effortless interface for North American, European, and Asia-Pacific procurement directors. We interpret GD&T drawings, discuss DFM suggestions via video conference, and operate in overlapping time-zones.
Precision Laser, Optical & Substrate Solutions
Explore additional high-demand custom quartzware, laser pump components, and optical viewing solutions engineered in our Tianjin plant.
Industry Trends: The Evolution of Microcapillary Glass
Emerging requirements pushing the boundaries of precision redrawing, microchannel fabrication, and integrated optofluidics.
Multi-Lumen & Non-Circular Geometries
Next-generation DNA sequencers and micro-endoscopes demand multi-bore (multi-lumen) capillary profiles. BY Photonics is pioneering custom arrays featuring square outer cross-sections with round inner bores, or double-bore capillary setups with micron-level spacing consistency.
Integration of Inner Surface Coatings
Supplying bare capillary glass is evolving into providing pre-functionalized products. The demand for polyimide-sheathed capillary tubes, silanized internal walls, and selective AR/reflective internal coatings is expanding rapidly in pharmaceutical bioprocessing.
Next-Gen Semiconductor Packaging
As advanced microelectronics transition toward optical co-packaged optics (CPO), precision quartz capillary arrays serve as critical spatial alignment blocks for multiple single-mode optical fibers interfacing directly with silicon photonics dies.
Frequently Asked Questions (FAQ)
Key technical and commercial queries clarified by our manufacturing engineering and procurement departments.
We regularly draw micro capillary tubing with internal diameters down to 5 µm with tolerances held to ±0.5 µm. Outer diameters (OD) range from 100 µm up to 10 mm. Critical dimensions can be verified using optical interferometry and non-contact laser micrometer inspection with complete measurement data supplied.
We employ precision diamond-wheel dicing with ultrasonic cooling, thermal-shock cracking, and excimer laser cleaving to produce razor-sharp, crack-free orthogonal end faces. Post-cut parts undergo multi-stage ultrasonic deionized water baths and cleanroom baking to eliminate micro-particles before packaging.
Yes. We specialize in custom redrawing profiles. Our engineers can produce square-bore, rectangular, D-shaped, oval, or multi-channel micro capillary quartz tubes based on your provided 2D/3D CAD drawings or physical reference samples.
For custom capillary redrawing trials, prototype quantities start as low as 50 to 100 pieces with lead times around 2–3 weeks. Mass wholesale production typically operates on a 3–4 week manufacturing cycle depending on profile complexity and quantity requirements.
Our micro capillary quartz tubing is secured in rigid grooved blister packs or cushioned polystyrene trays that prevent capillary interaction. These are vacuum-sealed in moisture-barrier bags and placed inside reinforced, double-corrugated shipping cartons with high-density impact-damping foam.
Connect Directly with Our Quartz Engineering Team
Skip generic supply broker markups. Collaborate directly with factory engineers in Tianjin to optimize tolerances, lower manufacturing costs, and secure reliable wholesale supply lines for micro capillary quartz tubes.