Capillary Tubes

Product Description

1. General Description

Capillary quartz tubes are precision-engineered cylindrical structures with a small internal diameter and varying wall thickness. They are fabricated from high-purity quartz (silicon dioxide, SiO2), known for its exceptional optical, thermal, and chemical properties. These tubes serve as indispensable components in various industries, thanks to their reliability and performance in demanding environments.

2. Material

The primary material for capillary quartz tubes is fused silica or fused quartz, derived from high-purity natural quartz crystals or synthetic silica. Fused quartz is preferred for its:

• High purity (typically >99.99% SiO2)
• Exceptional thermal resistance
• High optical transparency (UV, visible, and IR)
• Chemical inertness and resistance to most acids and alkalis
• Low thermal expansion coefficient

3. Manufacturing Process

Capillary quartz tubes are manufactured using precision techniques to achieve tight dimensional tolerances and surface finishes. The process includes:

• Raw Material Preparation: High-purity quartz is melted in specialized furnaces to create fused quartz.
• Tube Drawing: The molten quartz is drawn into tubular shapes through precision mandrels and dies, ensuring consistent internal diameters and wall thicknesses.
• Annealing: The tubes undergo controlled heating and cooling cycles to relieve internal stresses and enhance durability.
• Cutting and Polishing: Tubes are cut to specified lengths, and ends are polished for smoothness and accuracy.
• Quality Inspection: Each tube is inspected for dimensional accuracy, surface finish, and material purity to meet stringent quality standards.
• Dimensions: Quartz tubes are hollow cylindrical structures with varying inner and outer diameters, wall thicknesses, and lengths. Quartz rods, on the other hand, are solid cylindrical structures with uniform diameters and lengths. The dimensions of quartz tubes and rods can be customized according to specific requirements.
• Quartz tubes and rods can be fabricated with various end finishes, such as fire-polished ends, flanges, or ground ends, to facilitate connections and installations.

It’s important to note that the specific properties and dimensions of high temperature resistant quartz tubes and rods can vary based on the manufacturer and the intended application. Therefore, it’s advisable to consult the M-Kube team for detailed specifications and recommendations based on your specific needs.

4. Properties

Capillary quartz tubes exhibit a unique combination of properties that make them suitable for demanding applications:

• Thermal Stability: Can withstand high temperatures (up to 1180°C for long-term use, 1630°C for short-term use).
• Optical Transparency: Excellent transmission in UV (down to 190 nm), visible, and infrared spectra.
• Chemical Resistance: Inert to most chemicals, except hydrofluoric acid and certain hot alkali solutions.
• Low Thermal Expansion: Minimizes thermal stress and deformation.
• High Purity: Suitable for applications requiring minimal contamination.
• Mechanical Strength: Resistant to thermal shock and mechanical stress when properly handled.

5. Applications

Capillary quartz tubes find extensive use across a wide range of industries due to their versatility and superior performance:

1. Analytical Instruments: Used in gas chromatography, spectrometry, and other analytical devices.
2. Medical Applications: Employed in microfluidic devices, diagnostic instruments, and laser delivery systems.
3. Semiconductors: Used in chemical vapor deposition (CVD) processes and wafer processing.
4. Optics and Photonics: Serves as light guides, optical fiber preforms, and laser components.
5. Aerospace and Defense: Utilized in high-temperature and high-precision systems.
6. Chemical and Pharmaceutical Processing: For chemical reactions, distillation, and synthesis under controlled conditions.
7. Environmental Monitoring: Critical in air and water analysis systems for trace element detection.

We also offer the capability to manufacture customized capillary tubes tailored to specific dimensions, materials, and end finishes to suit diverse application needs.

Capillary quartz tubes are a testament to advanced materials engineering, offering unmatched performance in applications where precision, reliability, and durability are paramount. For inquiries or customized solutions, please contact our technical team.

M-Kube Enterprise is a USA company catering customized laboratory products, laboratory consumables, and laboratory solutions in the USA, India, Australia, Dubai, Indonesia, Malaysia, New Zealand, the Philippines, Singapore, South Korea, and Vietnam. Our team of experts across different platforms can discuss and customize your requirements as per your needs.

Please reach out to us at [email protected] or call us at +1-732-808-1999 to discuss your projects.