W153 & H153 – Preliminary Results

Shipped: October 26, 2015

W153 Preliminary results

Sample NumberOrganismTotal Colony Count (Group Means)
Membrane Filtration Method cfu/100mLEnzyme Substrate Method
MPN/100mL
Total coliformsThermotolerant coliformsE.coliTotal coliformsThermotolerant coliformsE.coli
W153-1Enterobacter aerogenes63±11, MU 18%0 ± 00 ± 073±12, MU 16%
0 ± 00 ± 0
W153-2no organisms present0 ± 00 ± 00 ± 00 ± 00 ± 00 ± 0
W153-3Enterobacter aerogenes19±4, MU 24%0 ± 00 ± 018±3, MU 19%0 ± 00 ± 0
W153-4E. coli16±4, MU 25%17±4, MU 20%16±4, MU 26%17±4, MU 23%8±3, MU 31%17±4, MU 22%

MU: measure of uncertainty


 

H153 Preliminary results

SamplesTotal Colony Count (Group Means)
H153-185±30, MU 35%
H153-20±0
H153-384±10, MU 12%
H153-4 82±16, MU 19%
H153-557±10, MU 17%

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

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