Borosilicate Glass Capillary Tube

Formula: SiO₂ 81/ B₂O₃ 13/Na₂O 4

Form: Tube

Material: Borosilicate Glass

Commodity: Glasses

Type: As-cut

Goodfellow offers a range of borosilicate glass capillary tubes ideal for scientific and industrial applications. Borosilicate glass is known for its very low thermal expansion coefficient, high heat resistance, and high chemical durability. The non-porous glass prevents gas permeation, while the tubular shape allows for precision fluid control. Common uses include laboratory sample handling, microfluidics, capillary chromatography, and fabrication of gas laser discharge tubes. These precision-drawn borosilicate glass tubes from Goodfellow enable experiments across a range of scales.

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Technical Data Sheet Safety Data Sheet Tolerance Properties

each

Tolerances

Tube

Outside Diameter	=<2mm	±0.05mm
Outside Diameter	2mm - 5mm	±0.1mm
Outside Diameter	>5mm	±5%
Wall Thickness		±10%

Material Properties for Glasses

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

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Borosilicate Glass Capillary Tube

Tolerances

Material Properties for Glasses