Table 7.5 The Following Results Were Obtained from a Use- Dilution Test

Short Answer

Table 7.5
The following results were obtained from a use- dilution test of two disinfectants.
Cultures were inoculated into tubes containing varying concentrations of the disinfectants, incubated for 10 min. at 20°C, and then transferred to growth media without disinfectant. (+ = growth; - = no growth)

-In Table 7.5, which disinfectant is most effective? Against which group of bacteria is Disinfectant A most effective?