W172 & H172 Preliminary results

Shipped: July 10, 2017

W172 Preliminary results

Sample NumberOrganismTotal Colony Count (Group Means)
Membrane Filtration Method cfu/100mL
Total coliformsThermotolerant coliformsE.coli
W172-1E. coli47±5.5, MU 11.7%48±7.7, MU 16.0%47±5.5, MU 11.7%
W172-2Enterobacter species17±3.5, MU 21.0%00
W172-3E. coli31±5.6, MU 18.0%29±5.3, MU 18.5%31±5.6, MU 18.0%
W172-4Enterobacter species17±3.5, MU 21.0%00

MU: measure of uncertainty

H172 Preliminary results

SamplesOrganismTotal Colony Count (Group Means)
H172-1E. coli
66±10.0, MU 15.2%
H172-2Enterobacter species105±28.6, MU 27.3%
H172-3Enterobacter species 105±28.6, MU 27.3%
H172-4E. coli 148±22.7, MU 15.3%

MU (%): Measurement Uncertainty in percentage outliers excluded in group means

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