Testing is used to determine which specific antimicrobic will be effective against a particular pathogen. Common methods include:
: Antibiotic-impregnated discs are placed on a bacterial "lawn." The resulting Zone of Inhibition (the clear area where no growth occurs) is measured to categorize the organism as Sensitive (S) , Intermediate (I) , or Resistant (R) . antimicrobic
Exercise #31: Antimicrobic Sensitivity Testing: The Kirby-Bauer Method Testing is used to determine which specific antimicrobic