Microbiology: An Introduction
Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 7, Problem 8R
Summary Introduction

Introduction:

Disinfectant is a chemical agent which destroys bacteria and hinder its growth. Effective disinfectant should stop bacterial growth even in high dilution levels. When it reduces its effects and allows growth of bacteria, its usage become futile.

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A sample is diluted by a factor of 10 five times. The 10^-3 dilution has 272 colonies on it. Assuming you plated the same volume on each plate, how many colonies would you expect to find on the 10^-2 plate? Include units and use OCD formula.
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