Shipped: October 23, 2016
W163 Preliminary results
Sample Number Organism Total Colony Count (Group Means)
Membrane Filtration Method cfu/100mL
Total coliforms Thermotolerant coliforms E.coli
W163-1 E. coli 18±4, MU 22% 17 ± 4, MU 21% 18 ± 4, MU 24%
W163-2 Enterobacter species 48±10, MU 21% 0 ± 0 0 ± 0
W163-3 E. coli 53±5, MU 9% 51±4, MU 8% 53±5, MU 9%
W163-4 Blank 0±0 0±0 0±0
MU: measure of uncertainty
H163 Preliminary results
Samples Organism Total Colony Count (Group Means)
H163-1 Enterobacter species
MU(%)95±13
14%
H163-2 E. coli
MU(%)98±14
14%
H163-3 E. coli
MU(%) 127±21
16%
H163-4 Blank 0±0
MU (%): Measurement Uncertainty in percentage outliers excluded in group means
ISO17043