(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