Clark Borosilicate Standard Wall with Filament

Clark Borosilicate Standard Wall with Filament

The properties of borosilicate glass make it the most popular material among researchers for the fabrication of electrodes and micro-pipettes.

  • High quality borosilicate glass
  • Easy filling due to filament
  • Available in standard wall configurations
  • Outside diameters from 1.0 to 3.0 mm
  • Exceptionally low tip impedance (less than 50 MΩ)
  • Excellent for patch clamp pipettes and microinjection needles
  • Economical
  • Ratio of outside to inside diameters preserved up to the pipette tip after pulling

Item# Description U.S. List Price Quantity
30-0034 Borosilicate Standard Wall with Filament, 1.0 mm OD, 0.50 mm ID, 75 mm L , Pkg. of 500
30-0032 Borosilicate Standard Wall with Filament, 1.0 mm OD, 0.50 mm ID, 100 mm L , Pkg. of 500
30-0021 Borosilicate Standard Wall with Filament, 1.0 mm OD, 0.58 mm ID, 75 mm L , Pkg. of 500
30-0019 Borosilicate Standard Wall with Filament, 1.0 mm OD, 0.58 mm ID, 100 mm L , Pkg. of 500
30-0020 Borosilicate Standard Wall with Filament, 1.0 mm OD, 0.58 mm ID, 150 mm L , Pkg. of 500
30-0046 Borosilicate Standard Wall with Filament, 1.2 mm OD, 0.69 mm ID, 75 mm L , Pkg. of 350
30-0044 Borosilicate Standard Wall with Filament, 1.2 mm OD, 0.69 mm ID, 100 mm L , Pkg. of 350
30-0045 Borosilicate Standard Wall with Filament, 1.2 mm OD, 0.69 mm ID, 150 mm L , Pkg. of 350
30-0060 Borosilicate Standard Wall with Filament, 1.5 mm OD, 0.86 mm ID, 75 mm L , Pkg. of 225
30-0057 Borosilicate Standard Wall with Filament, 1.5 mm OD, 0.86 mm ID, 100 mm L , Pkg. of 225
30-0058 Borosilicate Standard Wall with Filament, 1.5 mm OD, 0.86 mm ID, 150 mm L , Pkg. of 225
30-0076 Borosilicate Standard Wall with Filament, 2.0 mm OD, 1.16 mm ID, 75 mm L , Pkg. of 125
30-0074 Borosilicate Standard Wall with Filament, 2.0 mm OD, 1.16 mm ID, 100 mm L , Pkg. of 125
30-0075 Borosilicate Standard Wall with Filament, 2.0 mm OD, 1.16 mm ID, 150 mm L , Pkg. of 125
30-0083 Borosilicate Standard Wall with Filament, 3.0 mm OD, 1.62 mm ID, 150 mm L , Pkg. of 55
Login for U.S. Pricing

The low softening temperature of this glass combined with its mechanical strength, chemical resistance, high electrical resistivity, and ability to withstand thermal stress make these capillaries the most widely used in the world. Standard wall Clark borosilicate capillaries are offered in a variety of outer and inner diameters all without an inner filament.

Micropipettes and microelectrodes manufactured from Clark glass are used primarily in intracellular and extracellular research. The end user can also manufacture their own microelectrodes and micropipettes using standard pipette pulling and microforge techniques.

Specifications
Composition 80.9% SiO2, 12.9% B2O3, 4.4% Na2O, 1.8% Al2O3
Softening Temp 815°C
Dielectric Constant 4.7
Tolerance (OD) ±0.05 - 0.10 mm, depending on OD

 

OD
(mm)
ID
(mm)
Wall
Thickness
(mm)
Tolerance
(mm)
Length
(mm)
Qty/Pkg Model Order #
     1.0    0.50

   0.25

   ±0.05 75 500 GC100FS-7.5  30-0034
100 500 GC100-FS10  30-0032
   0.58    0.21     ±0.05 75 500  GC100F-7.5  30-0021
100 500  GC100F-10  30-0019
150 500  GC100F-15  30-0020
   1.2    0.69    0.26    ±0.05 75 350  GC120F-7.5  30-0046
100 350  GC120F-10  30-0044
150 350  GC120F-15  30-0045
    1.5     0.86     0.32     ±0.05 75 225  GC150F-7.5

 30-0060

100 225  GC150F-10  30-0057
150 125  GC150F-15  30-0058
   2.0    1.16    0.42    ±0.10 75 125  GC200F-7.5  30-0076
100 125  GC200F-10  30-0074
150 125  GC200F-15  30-0075
   3.0    1.62    0.69     ±0.10   150     55  GC300F-15
 30-0083