6-66. What is the log reduction of Giardia lambia that is equivalent to 99.96 percent reduction?
Added by Angela W.
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Let $N$ be the final number of Giardia lambia after a 99.96% reduction. Then $N = N_0 - 0.9996 N_0 = 0.0004 N_0$. The log reduction is defined as $\log_{10} \frac{N_0}{N}$. Show more…
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