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US 6,638,346 B1Granted
Vaporization injector
AssigneeThermo Finnigan Italia S.p.A.
InventorsPaolo Magni, Fausto Munari, Konrad Grob
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AssigneeThermo Finnigan Italia S.p.A.
InventorsPaolo Magni, Fausto Munari, Konrad Grob
Estimating the term…
A vaporization injector for gas chromatography analysis instruments, of the type including a vaporization chamber, heated or which may be heated, with a longitudinally elongated shape, a device for hermetically inserting the needle of a syringe containing the sample (substance to be analysed and solvent) into the chamber, a connection for feeding a carrier gas into the chamber and a gas chromatography capillary column with an upstream end open inside the vaporization chamber. In order to allow the vaporization of large sample volumes, the upstream end of the gas-chromatography column and the injection point of the sample into the vaporization chamber are both arranged adjacent to one of the longitudinal ends of the vaporization chamber and the feed connection for the carrier gas is located adjacent to the other end.
A vaporization injector for gas chromatography analysis instruments, comprising a vaporization chamber, heated or which may be heated, with a longitudinally elongated shape having an upstream end and a bottom end, a device for hermetically inserting a needle of a syringe containing a sample into the chamber, a connection for feeding a carrier gas into the chamber and a gas chromatography capillary column with an upstream end open inside the vaporization chamber, wherein the upstream end of the gas-chromatography column is in the vicinity of the injection point of the sample into the vaporization chamber and both are positioned adjacent to one of the longitudinal ends of said vaporization chamber and the feed connection for the carrier gas is located in the vicinity of the other end of said vaporization chamber.
An injector as claimed in one of the previous claims, wherein the sample is injected into the vaporization chamber through a channel, fed at its upstream end by the needle of the syringe.
Dependencies are inferred from the claim text.