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Sutter Instrument Company, in addition to the finest micropipette
pullers available, offers a wide selection of high quality capillary
glasses in various sizes and materials. Though there are many types
and sizes of capillary glass available, we have carefully selected
only those that pass our criteria. Our expertise in micropipette
technology assures you of precision and high quality. Glass
We offer capillary glass tubing in three different compositions;
quartz, borosilicate and aluminosilicate. Each composition has its
own unique properties and the selection will be determined by your
application and your pullers capabilities.
See list of puller filaments with prices >
Minimum purchase of filaments is 2. Appropriate filament selection
depends on your research application, but a general guideline for
filaments is as follows:
Box Filaments are recommended for large diameter, double barreled,
or aluminosilicate glass. Box filaments are particularly suitable
for slice preparations where long, parallel walls would aid penetration.
If using a box filament, the size of the square box should be approximately
1.0mm to 1.5mm larger than the outside diameter of the glass that
you will be using.
For IVF and ICSI applications, a 2.5mm x 4.5mm box filament is recommended.
For pronuclear injection work, we recommend a 2.5mm x 2.5mm box
filament. Call for more specific advice or to request a combination
of settings, filaments, and glass for your application.
Trough Filaments are excellent general purpose filaments and
are recommended for patch pipettes produced from either standard
or thin wall glass.
Sutter pre-programs the P-97 with a 2.5mm box filament
unless an alternative filament is requested.
For either type of filament,
increasing the filament width tends to increase the length of the
pipette taper. If there are specific questions as to the sizes needed,
please call and our technical support staff will guide you in your
As of November 1, 2004 all borosilicate and aluminosilicate capillary
glass offered by Sutter Instrument will have fire-polished ends.
This process eliminates any sharp edges, making it easier to insert
into holders, and does not affect the electrical or mechanical properties
of the glass.
Sutter Instrument Company can make custom pipettes and microtools
not commonly available from other pipette manufacturers. The custom
pipettes are considered non-sterile and are manufactured for research
applications and non-human use. Please contact Sutter Instrument
for further details.