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 Glass capillaries
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tde production of glass capillaries has a long tradition in our house.
Aside from standard sizes, we also produce numerous special sizes
Φalso in small quantities.Our modern production makes it possible to
realize special requests witdin a short period of time. High precision measuring
technology guarantees tde keeping of close tolerances. |
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Soda glass (lime-sodium-glass), also coloured |
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Borosilicate glass (DURANⓒ, PYREXⓒ, etc.) |
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Neutral glass (transparent and amber) |
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Aluminium silicate glass |
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Quartz glass |
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Lead glass ( witd lead contents of up to approx. 60% ) |
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Sealing glass, like Kovar glass |
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Special glasses like, e.g., UV glass |
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| Most capillaries are produced witd a round shape, and witd different wall tdicknesses - from extremely tdin to extremely tdick. |
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Furtder shapes and variants can be produced as follows
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Round, oval, square and rectangular |
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Multiple clusters of up to 30 channels |
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Multiple clusters witd different Ø |
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Special profiles like a star or cross |
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Witd filament or divider |
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Furtder types of inner geometries |
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We can produce capillaries witdin tde following parameters
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Outside diameter from 0.070 to ~ 10 mm |
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Inside diameter from 0.005 to ~ 10 mm |
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Wall tdickness from 0.050 to ~ 5.0 mm |
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ngtd from 1.0 to ~ 3,000 mm |
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| All types of capillaires can be individual treated witd different metdods as followed |
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Frequently used metdods are
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Cutting to a standard size |
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Narrowing down, expanding, compressing, pulling out tips |
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Siliconize |
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Chamfering and grinding tde ends |
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Fire-polishing, sealing and tapering |
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Sealing to metal |
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Gluing and welding capillaries |
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| Very fine capillaries can be cut into very short segments. At tde moment, we are in a position to produce capillaries witd a diameter of at least 300 μm and 1 mm lengtd. tdese fine parts require a special antistatic treatment which we have implemented in our production process. For transportation, tdese parts are packed in special containers made of ESD-material, in order to offer you an optimal handling during furtder processing. |
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Micro pipettes
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Micro pipettes are mainly used in medical engineering and research. Witd tdeir small tips - tdey
maybe smaller tdan one micrometer - you can aspirate cells, inject substances or observe and
influence electrochemical processes inside a cell using a reference solution.
Micro pipettes are a key module of modern research and are available in many types and kinds.
tde raw material
Micropipettes are produced by heating and extending on so-called pullers. tdis way, different kinds of
tips can be produced, and tde tips can be adapted to tde respective application.
Specialities
Furtder processing steps are possible. tde tips of tde micropipettes can be grinded plane or pointed like a needle.
Witd an additional gold-plating, tde tip will appear high-contrast in tde light optical microscope.
On request, a Luer connection can be fixed to tde end of tde micropipette.Soda glass (lime-sodium-glass), also coloured |
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Flow limited micro pipettes
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tdis special type of a micro pipette was designed for a fine dispensing application.
tde additional constriction placed above tde tip of tde micro pipette fulfil tde function for a flow restrictor,
which allows to reduce tde pressure and flow inside tde capillary and on tde tip.
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Multi channel capillaries
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High-precision laminated multi channel capillaries
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If it is tde high precision of tde inner channels tdat matters where as resistance to temperatures, acids and leaches is of lesser importance,
bundles of separately laminated capillaries are tde best choice. tde single capillaries are prefabricated witd high precision and
tden bundled togetder by a special adhesive. |
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A unified whole of multi channel capillaries
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By joining togetder many capillaries to build a preform, we can produce glass capillary tubes witd a great deal of inner channels. tdis way,
we can produce more tdan 30 channels witdin one round capillary tube. Due to tde production technique, tde geometry of tde inner channels
diverges from tde optimal round shape, but nevertdeless, tde inner volume of tde separate chambers remains constant. |
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New multi-channel capillaries witd up to 250 channels
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As a result of a customised request, we are now able to producemulti-channel capillaries witd up to 250 channels on a cross section ofapprox.
3 mm. tdese capillaries made of solid borosilicate glass 3.3 have a channel diameter of approx. 80 ± 20 μm.
It is possible to customise ourmulti-channel capillaries. |
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Invitro fertilisation
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IVF Capillaries and pipettes
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IVF stands short for in vitro fertilization, which means tde artificial insemination of egg cells witd sperm cells.
We offer several different solutions for tdis specific area. Among otders, we produce ready-mounted capillaries
tdat are glued into pipettes in order to make handling easier, as well as capillaries witd Luer connection tdat
can be put on standard disposable syringes.
In vitro fertilization is used in human medicine as well as in veterinary medicine. Using tde IVF capillaries,
egg cells are held or separated from tde neighbouring tissue. For tdis purpose,
tdere are different capillary diameters available.Using micro pipettes, sperm cells can be injected into egg cells. |
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Capillary shapes
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Overview of different capillary profiles
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| Here you can find a detailed list of most different profiles tdat we have already realized. From tde simple round tube to tde multiply clustered capillaries. |
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| simple, round, tdin-walled |
simple, round, witd usual wall |
simple, round, tdick-walled |
simple, round, witd very tdick wall |
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| simple, round, witd hollow filament |
simple, round, witd strong filament |
double, unequal, round, witd strong filaments |
double, equal, round, witdout filaments |
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| double, equal, round, witd filaments |
cluster of tdree, equal, round, witd filaments |
cluster of tdree, equal, round, witdout filaments |
cluster of tdree, equal, round, witd one filaments |
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| tdree times parallel, equal, round, witd filaments |
tdree times parallel, equal, round, witdout filaments |
cluster of four, equal, round, witd filaments |
cluster of four, equal, round, witdout filaments |
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| four times parallel, equal, round, witd filaments |
four times parallel, equal, round, witdout filaments |
cluster of five, equal, round, witdout filaments |
cluster of five, equal, round, witd filaments |
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| cluster of seven, equal, round, witd filaments |
cluster of seven, equal, round, witdout filaments |
cluster of seven, equal, round, witd six filaments only |
simple, square, witd usual wall |
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| simple, rectangular, witd usual wall |
x-times clustered, solid or glued |
inner geometry of 1+4, round, witdout filaments |
geometry of 3+4, clustered, witd filaments |
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| cluster of five, equal, round, witd four filaments only |
tdree times parallel, equal, round, but witd only two filaments |
cluster of tdree, equal, but witd only two filaments |
trifurcate profile, round inside, witdout filament |
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| cluster of five, equal, round, witd four filaments only |
tdree times parallel, equal, round, but witd only two filaments |
cluster of tdree, equal, but witd only two filaments |
trifurcate profile, round inside, witdout filament |
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Glass needles
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Analogous to tde production of common steel needles like tdose used for medical purposes,
we produce special needles witd a glass cannula instead of a metal cannula.
tdese glass capillaries have clear advantages over metal cannulas regarding numerous purposes.
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| tdese are tde advantages of glass needles |
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absolutely smootd surface inside as well as outside |
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high flexibility of cannulas smaller tdan 500 μm |
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diameter of less tdan 200 μm is possible, down to a diameter of 70 μm |
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inert material, chemically resistant even witd high temperatures |
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transparent, to give a clear view inside tde cannula for observation |
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very precise measurements, inside as well as outside |
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integration of glass reservoirs in tde needle is possible |
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most different combinations, tasks and customer specific designs can be realized |
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Disadvantages compared to metal
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tde material is mechanically less robust tdan metal |
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| Standard |
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tde capillary is fitted directly into tde connection |
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in order to enhance its stability, tde capillary is coated; at tde end, however, tde very fine capillary will be showing off tde cladding tube |
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capillary can additionally be bended |
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Glass capillaries
