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Unformatted text preview: = > = - - Ppositive Pk 0 1 e Î» . For test tubes 5 and 6, the results are negative; = = = - Pnegative Pk 0 e Î» . Therefore, Ptotal = . P1P2P3P4P5P6P7 We graph Ptotal vs. concentrations and get the following chart. From the chart, we can tell that MPN is 0.2 cells / mL, which is 20 cells / 100mL. Comparing this to the undisinfected water bacterial concentration 106 cells / L, which is 105 cells / 100mL, the disinfection efficiency is N/N0 = 0.0002 = 2 Ã—-10 4 , which is 4-log removal....
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- Fall '08
- English-language films, #, 100mL, Yang Xia, water bacterial concentration, Poisson equation Pk=