(19)

(11)

EP 0 551 313 A1

(12)

(43) Date of publication: 21.07.1993 Bulletin 1993/29 (21) Application number: 91916832.0 (22) Date of filing: 02.10.1991

(51) International Patent Classification (IPC):  G01N 21/ 84( . ) G01N 15/ 02( . ) G01N 23/ 04( . ) (86) International application number: PCT/FI1991/000304 (87) International publication number: WO 1992/006367 (16.04.1992 Gazette 1992/09)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI NL SE (30) Priority: 02.10.1990 FI 19900004845 (71) Applicant: FABRETTI HOLDINGS LIMITED Europort (GI)	(72) Inventor: PUUMALAINEN, Pertti SF-57130 Savonlinna (FI) (74) Representative: Siebmanns, Hubertus  Gotapatent AB, Box 154 S-561 22 Huskvarna S-561 22 Huskvarna (SE)