Shipped: April 11, 2016
W161 Preliminary results
Sample Number Organism Total Colony Count (Group Means)
Membrane Filtration Method cfu/100mL
Total coliforms Thermotolerant coliforms E.coli
W161-1 E. coli 33±3, MU 8% 28±7, MU 7% 33±3, MU 8%
W161-2 E. coli 33±3, MU 8% 28±7, MU 7% 33±3, MU 8%
W161-3 No organisms present 0 ± 0 0 ± 0 0 ± 0
W161-4 Enterobacter aerogenes 34±4, MU 11% 0 ± 0 0 ± 0
MU: measure of uncertainty
H161 Preliminary results
Samples Total Colony Count (Group Means)
H161-1 89±19, MU 21%
H161-2 0±0
H161-3 99±16, MU 16%
H161-4 89±19, MU 21%
R161 Preliminary results
Samples Organism Total Colony Count cfu/100mL
R161-1 Pseudomonas spp. 352±113, MU 32%
R161-2 E. coli Total coliforms: 53±5, MU 10%
Thermotolerant coliform: 51±7, MU 15%
Fecal coliforms: 53±5, MU 10%
R161-3 Enterococus spp. 79±11, MU 21%
MU (%): Measurement Uncertainty in percentage outliers excluded in group means
ISO17043