Custom Micro Quartz Capillary Tubing Manufacturer & Supplier

Sub-Micron Dimensional Stability

Micro-capillary fluidics operate under low Reynolds number regimes where even sub-micron inner-diameter variance produces severe laminar flow turbulence and chromatographic peak tailing.

• Inner Bore Diameters: Down to 2 µm ±0.5 µm
• Concentricity & Runout: < 0.5% OD/ID ratio
• Surface Roughness (Ra): Internal bore Ra < 0.8 nm
• Zero chemical leachable ions (< 0.05 ppb trace metals)

Spectroscopic UV Transparency

Fabricated using ultra-pure synthetic JGS1 fused silica (SiO₂ > 99.9999%), micro capillary tubes ensure high photon throughput across the deep ultraviolet spectrum (185 nm – 2500 nm).

• UV Transmission @ 193 nm / 248 nm: > 90.5%
• Hydroxyl Radical (OH⁻) content: Controlled < 1 ppm or > 1200 ppm
• Fluorescence Background: Undetectable under 365 nm excitation
• Damage Threshold: > 15 J/cm² @ 1064 nm (10 ns pulse)

Severe Environment Resilience

Unlike borosilicate or polymer capillary tubings, micro quartz capillaries maintain crystalline structural integrity across wide thermal ranges and exposure to aggressive organic solvents.

• Continuous Operating Temp: Up to 1100 °C (Short spike 1250 °C)
• Thermal Expansion Coeff (CTE): 5.5 × 10⁻⁷ /°C
• Tensile Strength (Polyimide coated): > 100 kpsi
• Hydrolytic & Acid Class 1 resistance under DIN 12111

Vertical Upstream Integration

By securing direct ingot production pipelines with certified quartz feedstock vendors, BY Photonics buffers global customers from raw silica volatility and lead-time shocks.

Closed-Loop AI Draw Towers

Automated draw towers utilize multi-axis non-contact dual laser micrometers, streaming continuous geometric data at 10 kHz directly to traction servos to preserve wall concentricity.

100% Traceable Metrology

Every capillary run undergoes microscopic end-face profile measurement, Zygo white-light interferometry, and spectrophotometric validation with lot-specific inspection sheets provided.

Fluorine-Doped Depressed Cladding

Integrating synthetic fluorine-doped layers directly onto the capillary inner/outer walls to establish waveguiding capabilities, reducing refractive boundaries in optofluidic lab-on-a-chip setups.

Complex Multi-Lumen Geometries

Transitioning from single circular bores to custom multi-bore configurations (dual-bore, square outer/round inner, hex-channel matrices) for concurrent fluid-sheath micro flow cytometry.

Functionalized Anti-Reflective Coatings

Advanced vacuum PECVD coatings applied to outer and interior channel faces to enhance high-power laser transmission, preventing localized thermal buildup inside optogenetic probes.