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Hilgenberg - Glass Needles
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Analogous to conventional steel needles, as used in medical applications, we manufacture special needles with a glass capillary instead of a metal cannula. In many applications, glass capillaries offer decisive advantages compared with metal cannulas:
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- absolutely smooth internal and external surfaces
- cannulas smaller than 500 µm are highly flexible
- diameter of less than 200 µm are possible – down to 70 µm
- inert, chemically resistant material, also at high temperatures
- transparent, for observations in the cannula
- very precise internal and external dimensions
- glass reservoirs can be integrated in the needle
- numerous configurations, applications, and customer-specific designs are possible
The only disadvantage of glass needles compared with their steel counterpart is their lower mechanical strength.
Standard versions
- Capillary is mounted directly in the syringe coupling
- Capillary is enclosed in a sheathing tube to increase its strength, but only the very fine capillary projects at the end of the sheath
- Capillary can also be angled