Claims
- 1. Needle for use in withdrawing a liquid sample from a closed sample vessel having a self-sealing diaphragm, said needle comprising:
- a capillary tube having an aperture at one end thereof, which aperture communicates with a longitudinal passage through said tube, said one end being conically tapered at the outside, the interior of said capillary tube being conically tapered at said one end, said taper having a conus angle of about 22.degree. and being such that the diameter of said aperture is about equal to half the diameter of said passage.
- 2. Needle as claimed in claim 1 wherein said capillary tube is turned inwardly at said one end.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3125321 |
Jun 1981 |
DEX |
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Parent Case Info
This Application is a continuation of Application Serial No. 392,120, filed June 25, 1982 now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3754434 |
Guild |
Aug 1975 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
392120 |
Jun 1982 |
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