Transparent Quartz Capillaries Large Bore/Small Bore Irregular
Glass Tubing
Quartz capillaries are tubular optical components manufactured
through precision drawing processes using high-purity fused silica
(SiO₂). Classified into large-bore (OD≥1mm) and small-bore (OD<1mm)
variants, they are extensively utilized in analytical instruments,
fiber optic communications, biomedical devices, and semiconductor
applications. As a specialized optical component manufacturer, ZMSH focuses on
the R&D and production of quartz capillaries, offering
high-precision custom processing. ZMSH support client-provided drawings for customization,
accommodating diverse dimensions, wall thicknesses, ID/OD ratios,
and specialized coating requirements. Our capabilities span from laboratory-scale small batches to
industrial mass production, guaranteeing exceptional performance in
light transmission, chemical stability, and mechanical strength.
Specification for Quartz Capillaries
| Parameter | Large-Bore Capillary | Small-Bore Capillary |
| Outer Diameter Range | 1.0mm~20.0mm | 0.1mm~1.0mm |
| Wall Thickness Tolerance | ±0.05mm | ±0.01mm |
| ID/OD Ratio | 0.2~0.9 (Customizable) | 0.1~0.8 (Customizable) |
| Length | ≤1000mm (Standard) | ≤500mm (Standard) |
| Roundness Error | ≤1% | ≤2% |
| Surface Roughness | Ra≤0.8nm (Polished) | Ra≤1.2nm (Polished) |
| Thermal Expansion Coefficient | 0.55×10⁻⁶/°C | 0.55×10⁻⁶/°C |
| Max Operating Temperature | 1100℃ (Short-term) | 1000℃ (Short-term) |
| Transmission Range | 170nm~2500nm | 170nm~2500nm |
| Pressure Resistance | >30MPa (Wall≥0.5mm) | >10MPa (Wall≥0.1mm) |
Key Features of Quartz Capillaries
The core characteristics of quartz capillaries include:
1. High-Purity Material: SiO₂ content ≥99.99%, ensuring minimal impurity interference for
high-precision analysis.
2. Superior Thermal Stability: Thermal expansion coefficient of only 0.55×10⁻⁶/°C, withstanding
temperatures up to 1100°C (short-term).
3. Chemical Inertness: Resistant to acid/alkali corrosion (except HF), compatible with
aggressive solvent environments.
4. Dimensional Versatility: Large-bore capillaries (OD 1mm–20mm) for fluid transfer;
small-bore (OD 0.1mm–1mm) for microfluidics or fiber coupling.
5. Optical Performance: High transmittance from UV to IR (170nm–2500nm), with optional AR
coatings to enhance transmission.
Primary applications of Quartz Capillaries
Quartz capillaries play pivotal roles in:
1. Analytical Instruments: Separation columns for GC/LC systems, requiring high purity and
pressure resistance.
2. Fiber Optics: Preforms for fiber drawing or coupling components, demanding
micron-level dimensional precision.
3. Biomedical: Microchannels in lab-on-a-chip devices, necessitating
biocompatibility and chemical stability.
4. Semiconductor Processes: Gas delivery tubes for CVD/etching, tolerant to high-temperature
corrosive gases.
5. Research Systems: Beam guide tubes for synchrotron/laser experiments, requiring
high vacuum compatibility.
ZMSH's Services
ZMSH delivers end-to-end customization for quartz capillaries,
including material selection, precision drawing, dimensional
machining, and functional treatments. Clients may submit CAD
drawings or technical specifications; we employ CNC laser cutting
and precision polishing to achieve complex structures (e.g.,
tapered ends, multi-lumen capillaries) with tolerances as tight as
±0.01mm. For specialized needs, we offer silanized inner walls
(hydrophobicity enhancement), metallized coatings (conductive
applications), or high-pressure reinforcement (burst pressure
>50MPa). All products undergo diameter consistency inspection
(ovality ≤1%) and transmittance testing, accompanied by
ISO-certified test reports. We support R&D-scale orders
(minimum 10 units) and large-scale OEM collaborations, with
flexible lead times, complemented by technical consulting and
after-sales support.
Related product recommendations: Quartz tubes
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