(19)

(11)

EP 0 221 165 A1

(12)

(43) Date of publication: 13.05.1987 Bulletin 1987/20 (21) Application number: 86903124.0 (22) Date of filing: 02.05.1986

(51) International Patent Classification (IPC):  G01N 3/ 40( . ) G01N 27/ 04( . ) G01N 3/ 42( . ) G01N 3/ 06( . ) (86) International application number: PCT/AU1986/000122 (87) International publication number: WO 1986/006833 (20.11.1986 Gazette 1986/25)

(84) Designated Contracting States: FR (30) Priority: 03.05.1985 AU 19850000418 (71) Applicant: UNISEARCH LIMITED Kensington New South Wales, 2033 (AU)	(72) Inventors: GOLDSMID, Hiroshi, Julian Epping, NSW 2121 (AU) HOWES, Victor, Raymond Kingsford, NSW 2032 (AU) WIECZOREK, Lech Strathfield, NSW 2135 (AU)