Jet Separator

Jet Separator

Jet Separator

What is a Jet Separator?

The jet separator consists of two nozzles and an outlet to a vacuum pump. The incoming sample is either passed through the separator to the ion source or pumped away by the vacuum system.

The column effluent is forced through a fine jet into an evacuated enclosure. Opposite the first jet, and only a very small distance from it, is mounted a second jet. 

Under normal conditions, the sample will pass through the jets at high speeds. The heavy sample ions travel almost in a straight line from one jet to the other. The heavy ions have more momentum to carry them straight across to the receiving nozzle. Lighter molecules diffuse after leaving the inlet jet, and are pumped away by the jet separator's vacuum system.

Jet Separator Advantages

  • temperature independent
  • chemically inert
  • sample enrichment (carrier gas preferentially removed)

Jet Separator Disadvantages

  • discriminates against low molecular weight compounds
  • easily clogged
  • easily mechanically misaligned, if mishandled

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