HardyDisks* AST Levofloxacin LVX-5 1 x 50 disks^ HardyDisks* AST Levofloxacin, LVX-5, impregnated paper disks used for Antimicrobial Susceptibility Testing (AST), also known as Kirby-Bauer testing, fully compatible with the BBL single or multiple disk dispensers, Size: 1 x 50 disks