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Sample injection means

  • US 4,879,915 A
  • Filed: 12/20/1988
  • Issued: 11/14/1989
  • Est. Priority Date: 03/17/1987
  • Status: Expired due to Term
First Claim
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1. A sample injection means, comprising a single vented needle having a body, said body having an upper end and a lower end, a needle shaft extending from said lower end, said shaft having a tip thereon, an injection passageway running through said body and communicating between the exterior of said body above said shaft and the exterior of said shaft, and a vent passageway, running through said body and communicating between the exterior of said body above said shaft and the exterior of said shaft, when in use said upper end being connected to a valve and said lower end being connected to a receptacle for receiving samples.

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