A multiple-tube fermentation test for coliform group of two water samples yielded the following results. Determine the MPN per 100 ml for sample 2. Sample Portion (mL) Number of positive tubes out of five Sample 1 Sample 2 1 0.1 3 0.01 5 0.001 1 0.0001 0.00001 180 1,800 140 130 O O O O

Structural Analysis
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Chapter2: Loads On Structures
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A multiple-tube fermentation test for coliform group of two water samples yielded the following results. Determine the MPN per 100 ml for sample 2.
Sample Portion (mL)
Number of positive tubes out of five
Sample 1
Sample 2
1
5
0.1
5
3
0.01
2
0.001
1
0.0001
3
0.00001
180
1,800
140
130
O O O O
Transcribed Image Text:A multiple-tube fermentation test for coliform group of two water samples yielded the following results. Determine the MPN per 100 ml for sample 2. Sample Portion (mL) Number of positive tubes out of five Sample 1 Sample 2 1 5 0.1 5 3 0.01 2 0.001 1 0.0001 3 0.00001 180 1,800 140 130 O O O O
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