You are tasked with enumerating the microbial load of an unk…
You are tasked with enumerating the microbial load of an unknown sample. You begin your investigation by serially diluting the sample resulting in the following dilutions: 10-2, 10-3, and 10-4. You spread 100µl of each dilution onto a separate nutrient agar plate and incubate for 48 hours. Upon examining the plates for the 10-2 and 10-4 dilutions only. You observe the following results: 10-2: 220 CFU 10-4: 60 CFU Calculate the viable titer for these two agar plates. Report your final answer in the correct notation and with appropriate units.