Quartz Capillary Tubes

Quartz Capillary Tubes
Quartz Capillary Tubes TotalQuartzWorks

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Quartz Capillary Tubes Description

Quartz capillary tubes are long, thin cylinders made from high-purity fused quartz. They feature exceptional transparency, chemical stability, and precise dimensional control, making them ideal for use in scientific and industrial environments where precision and durability are essential.

One of their most defining characteristics is the extremely small inner diameter — from just a few micrometers to several millimeters. This allows for precise fluid or gas measurements and enables microscale chemical reactions with high repeatability.

Another key advantage is their excellent thermal stability. Quartz capillary tubes maintain structural integrity under extreme temperatures, suitable for use in high-temperature research and thermal processing.
Their low thermal expansion coefficient ensures dimensional accuracy even when exposed to wide temperature variations.

Chemical Composition (ppm)

ЕлементВміст (проміле)
Na<0.8
K<0.7
Ca<0.6
Fe<0.5
Al<16.2
Mg<0.3
Ti<2
Ba<0.05
Li<0.9
Cu<0.05
Ni<0.05
Cr<0.05

Physical Properties

PropertyValue
Чистота SiO₂ Чистота99.90%
Щільність2,2 г/см3
Mohs Hardness6.6
Coefficient of Thermal Expansion (25–300 °C)0.58 × 10⁻⁶ / °C
Melting Point1732 °C
Working Temperature≤ 1100 °C
Short-term Max Temperature1450 °C
Acid Resistance30 × ceramics; 150 × stainless steel
Electrical Resistance10,000 × ordinary glass
Точка відпалу1180 °C

Заявка

Capillary quartz tubes are widely used in analytical instruments, life sciences, optoelectronic devices, semiconductor processes, and high-intensity lighting.
They serve as key components in gas chromatography columns, electrophoresis systems, microfluidic chips, laser and optical assemblies, CVD gas lines, and arc lamps.
Thanks to their chemical inertness, optical clarity, and thermal stability, these tubes are essential in research, semiconductor fabrication, and precision laboratory applications.

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