(19)

(11)

EP 0 912 884 A1

(12)

(43) Date of publication: 06.05.1999 Bulletin 1999/18 (21) Application number: 97940001.0 (22) Date of filing: 16.07.1997

(51) International Patent Classification (IPC):  G01N 15/ 05( . ) (86) International application number: PCT/EP1997/003798 (87) International publication number: WO 1998/002726 (22.01.1998 Gazette 1998/03)

(84) Designated Contracting States: AT BE DE ES FR GB IT NL SE (30) Priority: 16.07.1996 IT 1996FI00169 16.07.1996 IT 1996FI00076U (71) Applicant: CDR S.R.L. 50125 Florence (IT)	(72) Inventor: CURRADI, Giampiero I-50012 Bagno A Ripoli (IT) (74) Representative: Gervasi, Gemma, Dr.  NOTARBARTOLO & GERVASI Srl, Corso di Porta Vittoria, 9 20122 Milano 20122 Milano (IT)