Capillary

Ultra-Pure Synthetic Fused Silica Capillary for Precision Optical and Scientific Applications

WEINERT Industries manufactures high-quality capillary from the same ultra-pure, synthetic fused silica materials used in its specialty optical fibers. These capillary combine excellent optical properties, best in class dimensional control, mechanical robustness, and chemical inertness, making them suitable for demanding analytical, industrial, medical, and optical applications.

Product Portfolio

Fused Silica Capillaries

Precision capillaries designed for applications requiring high purity, dimensional accuracy, and reliable performance.

Key Features

• Manufactured from ultra-pure synthetic fused silica

• Inner diameters from 20 µm to 1,100 µm

• Outer diameters from 150 µm to 2,000 µm

• Customer-specific tolerances available

• Custom lengths depending on diameter

• Available with cut, cleaved, or snap-cut end-face processing

Technical Capabilities

Material & Optical Performance

• Excellent transmission properties for UV and IR applications

• Smooth inner surfaces

• High mechanical strength

• Consistent dimensional accuracy

• Outstanding flexibility when externally coated

Coating Options

• Standard polyimide with operation up to 350°C

• Standard acrylate coating

• Custom high-temperature acrylate coating for demanding environments

• Custom sizes available with no external coating

Key Advantages

• Ultra-pure synthetic fused silica material

• High transmission from UV to  IR spectral range

• Smooth inner surfaces for optimal performance

• Tight dimensional tolerances yield precise flow rate control

• Excellent mechanical stability with a low coefficient of thermal expansion

• Inert internal surface for repeatable chemical performance

• Customized dimensions and tolerances

• Externally coated products proof tested to >100kpsi

Typical Applications

Analytical & Scientific Applications

• Capillary Electrophoresis

• Chromatography

• Mass Spectrometry

• Cytometry

Fiber Optic Applications

• Fiber Connections

• Fiber Splicing

• Optical Components

• Beam-guiding Optics

Industrial Applications

• Factory Automation

• Gas & Fluid Flow Management

• Nozzles & Nebulizers

• High Resistance Insulators

Medical Applications

• Transfer Lines for Drug Delivery

• Precision Flow Control

• Bolus Management & Delivery

• Pharmaceutical Packaging Leak Integrity Testing

Why WEINERT Capillary?

WEINERT capillary are manufactured from the same high-purity synthetic fused silica materials used for specialty optical fibers, ensuring superior optical quality, chemical stability, and mechanical durability. Their customizable dimensions and coating options enable application-specific solutions for analytical, industrial, medical and photonic systems.

Capillary

WEINERT Industries provides ultra-pure synthetic fused silica capillary for precision optical, analytical, medical, and industrial applications. Offering excellent UV/IR transmission, smooth inert inner surfaces,  durable external coating options, and customizable dimensions, these capillary are ideal for capillary electrophoresis, chromatography, fiber optic assemblies, optical components, medical devices, and advanced sensing systems.