Thin Wall Glass Capillaries

Item#: Make Selection

TW100-3, TW100-4, TW100-6, TW100F-3, TW100F-4,  TW100F-6, TW120-3, TW120-4, TW120-6, TW120F-3, TW120F-4, TW120F-6, TW150-3, TW150-4, TW150-6,  TW150F-3, TW150F-4, TW150F-6

Quality glass, superior prices for microinjection and microelelctrodes

  • Quality borosilicate glass capillaries
  • Large variety available
  • Some varieties are fire polished (See description)
  • See Details for part numbers

Unit Price: varies



For pricing, Customers outside of the US and Canada, please Contact your distributor

Thin-Wall Single-Barrel Standard Borosilicate (Schott Duran) Glass Tubing Options

ItemOD (mm)ID (mm)FilamentFire PolishLengthQty
TW100F-3 1.0 0.75   3 in. (76mm) 500
TW100-3   1.0 0.75     3 in. (76mm) 500
TW120F-3   1.2 0.90 3 in. (76mm) 400
TW120-3   1.2 0.90     3 in. (76mm) 350
TW150F-3   1.5 1.12   3 in. (76mm) 225
TW150-3   1.5 1.12   3 in. (76mm) 300
TW100F-4   1.0 0.75   4 in. (100mm) 500
TW100-4   1.0 0.75   4 in. (100mm) 500
TW120F-4   1.2 0.90   4 in. (100mm) 350
TW120-4   1.2 0.90     4 in. (100mm) 350
TW150F-4   1.5 1.12   4 in. (100mm) 225
TW150-4   1.5 1.12   4 in. (100mm) 300
TW100F-6   1.0 0.75   6 in. (152mm) 500
TW100-6   1.0 0.75   6 in. (152mm) 500
TW120F-6   1.2 0.90 6 in. (152mm) 400
TW120-6   1.2 0.90     6 in. (152mm) 350
TW150F-6   1.5 1.12   6 in. (152mm) 225
TW150-6   1.5 1.12   6 in. (152mm) 300


  • Superior pricing
  • Most glass orders ship within 48 hours


  • Microinjection
  • Electrophysiology
  • Patch clamp
  • Fluid Handling

Fire Polishing

Fire-Polished glass capillaries are easier to insert into microelectrode holders without damaging the gasket. More importantly, fire-polished glass won’t scratch the chloridized wire used in a recording electrode. Fire-polishing does not affect the glass’s mechanical or electrical properties.

Making Uniform, Reproducible Microelectrodes

Borosilicate glass capillaries: Close di­men­sion­al tol­er­anc­es assure mi­cro­elec­trode uni­for­mi­ty and reproducibility. Capillaries are available in 1, 2, 3, 5 and 7-barrel con­fig­u­ra­tions, complete range of single bar­rel thin-wall siz­es and a variety of special con­fig­u­ra­tions. Cap­il­lar­ies with filaments con­tain a solid fil­a­ment fused to the inner wall, which speeds filling of electrodes. Cap­il­lar­ies with or with­out inner filaments are available for making microelectrodes in a wide range of diameters.

Filament Glass Capillaries

Single Barrel standard wall thickness cap­il­lar­ies are offered either with or without in­ner fil­a­ments for quick filling in a variety of lengths and diameters.

Thin Wall Glass Capillaries

Thin Wall single barrel capillaries are of­fered both with or without inner filaments.


NOTE: Because electrode tips erode when left filled with saline solutions for long periods, electrodes should be made and filled immediately prior to use. 


More Information on Glass Capillary

Buying Multi-Barrel Glass Capillaries
Buying Capillaries for Making Micropipettes and Microelectrodes

Download the catalog page.



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