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Water Lecture 3 A. Disinfection B. Water Safety Plans - page 10 / 47

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Factors Influencing Disinfection Efficacy and Microbial Inactivation, Continued

Microbial strain differences and microbial selection:

Disinfectant exposure may select for resistant strains

Physical protection:

Aggregation

particle-association

protection within membranes and other solids

Chemical factors:

pH

Salts and ions

Soluble organic matter

Other chemical (depends on the disinfectant)

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