An otic product was subjected to AET and tested with the challenge microorganisms. An initial concentration of 2 x 10^5 cfu/mL of Escherichia coli was computed. Compute for the log reduction from the...

An otic product was subjected to AET and tested with the challenge microorganisms. An initial concentration of 2 x 10^5 cfu/mL of
Escherichia coli
was computed. Compute for the log reduction from the initial calculated count if the cfu/mL obtained is 1.2 x 10^4 at 7 days.