The following data was obtained by incubating Staphylococcus…

The following data was obtained by incubating Staphylococcus aureus (a gram-positive bacteria) in nutrient medium with disinfectant for 24 hours (Initial), then transferring one loopful of that culture to non-selective nutrient medium (subculturing). (+ = growth; – = no growth) Using the above information, which disinfectant is the most effective at stopping bacterial growth initially?  

The following data was obtained by incubating Staphylococcus…

The following data was obtained by incubating Staphylococcus aureus (a gram-positive bacteria) in nutrient medium with disinfectant for 24 hours (Initial), then transferring one loopful of that culture to non-selective nutrient medium (subculturing). (+ = growth; – = no growth) Using the above information, which disinfectant showed bactericidal activity?