The coliform organisms in a water sample (in mL) are tested using the multiple-tube fermentation method. Results are shown in the table provided. Determine the total number of positive samples and the MPN value based on Thomas Equation.
The coliform organisms in a water sample (in mL) are tested using the multiple-tube fermentation method. Results are shown in the table provided. Determine the total number of positive samples and the MPN value based on Thomas Equation.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question 52
![juiz
Sample dilution
No. of negative
1:100
1:1000
4
1:10000
tubes
3
No. of total tubes
6 UTM
MPN/100 mL =
Number of positive tubes x 100
V [(mL of sample in negative tubes) x (mL of samples in all tubes)]
UTM
provided](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9700d453-1784-4843-88f1-d0166d216a0d%2Fa92acb65-bbf5-433b-a76c-b38219d7220a%2Fidxhm95_processed.jpeg&w=3840&q=75)
Transcribed Image Text:juiz
Sample dilution
No. of negative
1:100
1:1000
4
1:10000
tubes
3
No. of total tubes
6 UTM
MPN/100 mL =
Number of positive tubes x 100
V [(mL of sample in negative tubes) x (mL of samples in all tubes)]
UTM
provided
Transcribed Image Text:The coliform organisms in a water sample (in mL) are tested using the multiple-tube fermentation method. Results are shown in the table
provided.
Nterf 0
MNT0
Q Zoom
Determine the total number of positive samples and the MPN value based on Thomas Equation.
7, 14 x 103
15, 14 x 102
6, 14 x 104
8, 14 x 105
D
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