Specialized Tools for Electrophysiology and Cell Biology Research

Clark Aluminosilicate Capillaries with Filament

Product Summary

There has been increasing interest in fabricating micropipettes from aluminosilicate glass.

In comparison with borosilicate glass, aluminosilicate provides increased hardness, improved chemical durability, reduced electrical conductivity and a lower coefficient of thermal expansion. Like silicon, aluminum combines with oxygen to form tetrahedral networks and the Al-O bonds are very strong.

While the original ratio of a borosilicate capillary's inner to outer diameter remains unchanged over its total taper length, aluminosilicate glass demonstrates a marked tendency to thin as it is drawn to a tip. This behavior allows extremely fine tips to be formed.

While Clark micropipettes and microelectrodes are used primarily in intracellular and extracellular research, the end user can manufacture their own microelectrodes and micropipettes using standard pipette pulling and microforge techniques.

For more information, see:

  • Na/H Exchange, Vaughan-Jones, RD.; Grinstein Press, Ch.1 p.8
  • Effects of intracellular and extracellular pH on contraction in isolated mammalian cardiac muscle, Bountra, C. & Vaughan-Jones, R.D.; Journal of Physiology Volume 418 (1989)

 

OD
(mm)
ID
(mm)
Wall
Thickness
(mm)
Tolerance
(mm)
Length Qty/Pkg Model Order # Quick Add
to Order
1.0 0.53 0.24 ± 0.05 100 mm 500 SM100F-10 30-0108 Login
150 mm 500 SM100F-15 30-0109 Login

 

Composition 51.9% SiO2, 22.0% Al2O3, 7.8% P2O5, 7.7% MgO,
6.9% CaO, 2.1% B2O3, 1.4% BaO and 0.2% As2O3
Softening Temp 950 °C
Dielectric Constant 6.2
Wall:OD thickness ratio 0.235
Tolerance OD ± 0.05 mm

 

OD
(mm)
ID
(mm)
Wall
Thickness
(mm)
Tolerance
(mm)
Length Qty/Pkg Model Order # Quick Add
to Order
1.0 0.53 0.24 ± 0.05 100 mm 500 SM100F-10 30-0108 Login
150 mm 500 SM100F-15 30-0109 Login

 

Customers from Europe and Australia can use the Multi Channel Systems - Online Shop to order Warner products or create quotes.

Pricing Top Description

Lead time for Clark Glass is commonly 4 to 6 weeks.

Order No. Model No. Product Description USA Price Order
1.0 mm OD - wall thickness 0.24 mm
30-0108 SM100F-10 Aluminosilicate, with filament, 1.0 x 100 mm (OD x L) Login Login
30-0109 SM100F-15 Aluminosilicate, with filament, 1.0 x 150 mm (OD x L) Login Login

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