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Capillary Tubing

Bundled assembly


Fiberguide’s Fused Silica Capillary Tubing is used for micro-fluidics applications and in gas chromatography (GC) separation columns. These capillaries are coated with polyimide for mechanical stability and versatile uses.

  Spec Sheet    

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Fiberguide’s fused silica capillary tubing has many benefits:

  • Inert surfaces and high purity -> Higher phase stability
  • Peak mechanical stability -> Greater yield, more cost-efficient
  • Superior thermal capacity -> Improved deactivation
  • Greatest flexibility -> Smaller radii during coiling (non-kinking)
  • High tensile strength (>600kpsi) -> Very strong and flexible
  • Impervious to chemicals -> Usage in harsh environments
  • Mirror smooth inner surface -> Stable laminar flow profiles and good adherence
  • Pressure resistant to 4500psi -> Precision control of liquid and gas flow rates
  • High OH content -> Easy surfacing bonding to siloxanes
  • Wide range of internal and external diameters -> Selection that best suits flow rate requirements
  • Tight tolerances -> Dimensionally stable over long lengths
  • Easily cleaved or cut -> Provides for adjusting column length needed for interfacing
  • High dielectric strength -> Ample isolation for the high voltages (up to 30kV) used in CE
  • Polyimide coating -> Durable and abrasion resistant


  • Micro-fluidics
  • Gas chromatography

  • Pure Fused Silica Construction
  • Outside Diameters: 90µm – 435µm
  • Inside Diameters: 2µm – 320µm
  • Coating: Polyimide
  • Temperature Range: -190°C to +350°C / -310°F to +662°F
Please see the Spec Sheet for further information.

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