(19)

(11)

EP 0 318 482 A1

(12)

(43) Date of publication: 07.06.1989 Bulletin 1989/23 (21) Application number: 87904817.0 (22) Date of filing: 24.07.1987

(51) International Patent Classification (IPC):  G01N 21/ 79( . ) (86) International application number: PCT/AU1987/000233 (87) International publication number: WO 1988/001380 (25.02.1988 Gazette 1988/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 22.08.1986 AU 19860007609 (71) Applicant: CSBP & FARMERS LTD. Perth, W.A. 6000 (AU)	(72) Inventor: ROHDE, Karl Samson, W.A. 6163 (AU) (74) Representative: Barnard, Eric Edward  BROOKES & MARTIN High Holborn House 52/54 High Holborn London WC1V 6SE London WC1V 6SE (GB)