The document summarizes a 1966 paper by Bauer et al. that standardized the single disk method for antibiotic susceptibility testing. The standardized method consolidated previous descriptions, provided guidelines for use, and yielded reliable results compared to minimum inhibitory concentration tests. It helped clinical microbiologists perform testing more easily. The method's recommendations still provide a valid framework today, though some drugs are obsolete and zone sizes have been modified. The "Kirby-Bauer" disk diffusion method remains the most researched and updated approach used internationally for antibiotic susceptibility testing.