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Borosilicate Glass Capillary Tube

Available Configurations

Properties common to all products in this list

Composition: SiO₂ 81/ B₂O₃ 13/Na₂O 4 Form: Tube Material: Borosilicate Glass Commodity: Glasses Type: As-cut
Borosilicate Glass Capillary Tube combines high chemical durability, low thermal expansion, and excellent optical clarity, resulting from its silica-rich composition with boron oxide as a stabilizing agent. Its low coefficient of thermal expansion (~3.3 × 10⁻⁶/°C) provides exceptional thermal shock resistance, making it reliable for applications involving rapid temperature changes. These capillaries are widely used in analytical instrumentation, precision dosing systems, and microfluidics due to their consistent internal dimensions and resistance to chemical attack. Specific technologies benefiting from borosilicate capillary tubes include chromatographic separation systems, spectroscopic sample delivery, and precise liquid transfer in pharmaceutical testing. In research, their dimensional stability and inertness make them essential for experimental setups demanding high reproducibility and contamination-free fluid handling. Their integration across laboratory, industrial, and high-tech sectors underscores their value as a foundational material in precision science and engineering.
Starting at $820.00 each
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Material Properties

Chemical Resistance
Element Value
Acids - concentrated 0
Acids - dilute 0
Alkalis 0
Halogens 0
Metals 0
Electrical Properties
Element Value
Dielectric constant 0
Dielectric strength( kV mm⁻¹ ) 0
Volume resistivity( Ohmcm ) 0
Mechanical Properties
Element Value
Poisson's ratio 0
Tensile modulus( GPa ) 0
Hardness - Knoop( kgf mm⁻² ) 0
Hardness - Vickers( kgf mm⁻² ) 0
Shear strength( MPa ) 0
Tensile strength( MPa ) 0
Fracture toughness( MPam(0.5) ) 0
Physical Properties
Element Value
Refractive index 0
Useful optical transmission range 0
Apparent porosity( % ) 0
Water absorption - saturation( % ) 0
Density( gcm⁻³ ) 2.23
Thermal Properties
Element Value
Melting point( C ) 0
Sublimation point( C ) 0
Upper continuous use temperature( C ) 0
Specific heat( J K⁻¹ kg⁻¹ ) 0
Thermal conductivity( W m⁻¹ K⁻¹ ) 0
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 0
Pultrusions
Element Value
Compressive strength( MPa ) 0
each

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Available Configurations

Properties common to all products in this list

Composition: SiO₂ 81/ B₂O₃ 13/Na₂O 4 Form: Tube Material: Borosilicate Glass Commodity: Glasses Type: As-cut

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Tolerances

Tube
Outside Diameter =<2mm ±0.05mm
Outside Diameter 2mm - 5mm ±0.1mm
Outside Diameter >5mm ±5%
Wall Thickness ±10%
Length <100mm ±1mm
Length >=100mm +5% / -1%