Multipole ion guide for mass spectrometry

  • US 6,188,066 B1
  • Filed: 08/12/1999
  • Issued: 02/13/2001
  • Est. Priority Date: 02/28/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for analyzing chemical species, comprising:

  • (a) an ion source;

    (b) at least two vacuum stages;

    (c) a mass analyzer and detector located in at least one of said vacuum stages;

    (d) a multipole ion guide, said multipole ion guide having an entrance end in one of said vacuum stages and having an exit end in another of said vacuum stages; and

    , (e) means for applying electrical voltages to said multipole ion guide.

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