(19)

(11)

EP 0 909 260 A1

(12)

(43) Date of publication: 21.04.1999 Bulletin 1999/16 (21) Application number: 97925700.0 (22) Date of filing: 16.05.1997

(51) International Patent Classification (IPC):  C02F 1/ 50( . ) (86) International application number: PCT/US1997/008712 (87) International publication number: WO 1997/043215 (20.11.1997 Gazette 1997/50)

(84) Designated Contracting States: CH DE ES FR GB IT LI (30) Priority: 17.05.1996 US 19960648972 (71) Applicant: BIO-LAB, INC Decatur, GA 30031-1489 (US)	(72) Inventors: MITCHELL, Presley, K. Marietta, GA 30062 (US) PERRY-MURPHY, Delores, J. Stone Mountain, GA 30087 (US) LINES, E., LeRoy Atlanta, GA 30342 (US) SHELOR, Susan, M. Alpharetta, GA 30202 (US) (74) Representative: Allman, Peter John, et al  MARKS & CLERK, Sussex House, 83-85 Mosley Street Manchester M2 3LG Manchester M2 3LG (GB)