(19)
(11) EP 0 351 761 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.02.1991 Bulletin 1991/07

(43) Date of publication A2:
24.01.1990 Bulletin 1990/04

(21) Application number: 89113095.7

(22) Date of filing: 17.07.1989
(51) International Patent Classification (IPC)5: B01L 3/02, G01N 1/10
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 18.07.1988 US 220718

(71) Applicant: THE PERKIN-ELMER CORPORATION
Norwalk Connecticut 06859-0181 (US)

(72) Inventors:
  • Ryno, Perry M.
    Glendorea, CA 91740 (US)
  • Evans, Leigh J.
    Pomona, CA 91767 (US)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)


(56) References cited: : 
   
       


    (54) Sample injector


    (57) A disposable sample tip (10) to provide a liquid sample of a predetermined volume and a plunger type injector (12) to introduce the sample into a spectrometer for analysis. The injector (12) is provided with an anti-suction means (104) so that the sample will not be withdrawn from the sample tip (10) in the event the sample tip (10) is filled before the injector (12) is made ready to introduce the sample into the spectrometer.







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