(19)
(11) EP 0 258 565 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.05.1989 Bulletin 1989/21

(43) Date of publication A2:
09.03.1988 Bulletin 1988/10

(21) Application number: 87109424.9

(22) Date of filing: 30.06.1987
(51) International Patent Classification (IPC)4: G01N 1/00, G01N 35/00
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 02.07.1986 US 881237

(71) Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Wilmington Delaware 19898 (US)

(72) Inventors:
  • Buyer, Carl Owen
    Elkton, Maryland 21921 (US)
  • Whitcomb, James Arthur
    Wilmington, Delaware 19810 (US)
  • Laska, Paul Frank
    Wilmington, Delaware 19809 (US)

(74) Representative: von Kreisler, Alek, Dipl.-Chem. et al
Patentanwälte von Kreisler-Selting-Werner Postfach 10 22 41
50462 Köln
50462 Köln (DE)


(56) References cited: : 
   
       


    (54) Location identifying means


    (57) A system for positively identifying which one of a plurality of receptacles has received a sample is disclosed. It includes means for sequentially sensing the presence, along rows and columns, of tubes for dispensing samples. The receptacle at the intersection of the sensed row and column is the indicated one.







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