(19)

(11)

EP 0 221 105 A1

(12)

(43) Date of publication: 13.05.1987 Bulletin 1987/20 (21) Application number: 86902673.0 (22) Date of filing: 10.04.1986

(51) International Patent Classification (IPC):  B01L 3/ 00( . ) (86) International application number: PCT/US1986/000709 (87) International publication number: WO 1986/006488 (06.11.1986 Gazette 1986/24)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 29.04.1985 US 19850728255 06.08.1985 US 19850763332 (71) Applicant: HICHEM DIAGNOSTICS, INC., DBA BURAL TECHNOLOGIES Brea, CA 92621 (US)	(72) Inventor: BARNETT, Burton Rossmoor, CA 90720 (US)