A multiple-tube fermentation analysis of a river water yielded the following results. What are the MPN and confidence limits?
Serial Dilution | Sample Portion (ml) | Positive Tubes |
0 | 1.0 | 5 of 5 |
1 | 0.1 | 4 of 5 |
2 | 0.01 | 2 of 5 |
3 | 0.001 | 1 of 5 |
4 | 0.0001 | 0 of 5 |
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