(19)
(11) EP 0 190 325 A1

(12)

(43) Date of publication:
13.08.1986 Bulletin 1986/33

(21) Application number: 85904298.0

(22) Date of filing: 16.08.1985
(51) International Patent Classification (IPC): 
G01N 21/ 76( . )
G01N 33/ 02( . )
(86) International application number:
PCT/NL1985/000034
(87) International publication number:
WO 1986/001296 (27.02.1986 Gazette 1986/05)
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 17.08.1984 NL 19840002532

(71) Applicant: NIEAF-SMITT B.V.
NL-3526 AA Utrecht (NL)

(72) Inventor:
  • HOUPT, Pieter, Marius
    NL-2586 SE The Hague (NL)

(74) Representative: Mommaerts, Johan Hendrik, Dipl.-Phys. 
van Exter Polak & Charlouis B.V., P.O. Box 3241
NL-2280 GE Rijswijk
NL-2280 GE Rijswijk (NL)

   


(54) AN APPARATUS FOR DETECTING SMALL CONCENTRATIONS OF ETHENE IN AIR