These discs are used for semi-quantitative in vitro susceptibility testing by the agar disc diffusion test procedure of common, rapidly growing and certain fastidious bacterial pathogens. These include the Enterobacteriaceae, Staphylococcus spp., Pseudomonas spp., Acinetobacter spp., Enterococcus spp., Vibrio cholerae and, by modified procedures, Haemophilus influenzae, Neisseria gonorrhoeae, Streptococcus pneumoniae and other streptococci.
NOTE: Special procedures are required for testing pneumococci, enterococci and methicillin/oxacillin-resistant staphylococci, for performing ß-lactamase tests and for screening and confirmatory tests for ESBLs