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.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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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
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
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
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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