Table 1. Log Reduction Comparison of Non-pathogenic Escherichia coli on Surfaces [CFU / 81 sq. in.] as Affected by Surface Composition, Washing and Rinsing, and Sanitizing with Vinegar
 
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Summary
Material
Trmt.
Mean
Rdtn.
Mean
Rdtn.
Mean
Rdtn.
Mean
Rdtn.
Mean
Rdtn.
Log Avg.
Numerical value
Std. dev. of log av.
Innoculum
9.18
9.33
9.34
9.25
9.26
9.27
1,862,087,137
0.07
Laminate W & R
4.85
4.33
6.38
2.95
6.25
3.09
8.35
0.90
8.25
1.01
2.46
286
1.32
Vinegar
3.65
5.53
3.43
5.90
3.25
6.09
3.84
5.41
3.70
5.56
5.70
498,884
0.25
Wood W & R
6.38
2.80
6.89
2.44
6.76
2.58
6.62
2.63
6.55
2.71
2.63
429
0.12
Vinegar
5.82
3.36
6.00
3.33
5.98
3.36
6.04
3.21
5.93
3.33
3.32
2,080
0.06
Tile W & R
6.23
2.95
6.19
3.14
6.41
2.93
6.34
2.91
6.39
2.87
2.96
912
0.09
Vinegar
4.33
4.85
3.28
6.05
2.30
7.04
4.51
4.74
4.60
4.66
5.47
293,765
0.94
Concrete W & R
5.81
3.37
5.89
3.44
6.29
3.05
5.80
3.45
5.69
3.57
3.38
2,377
0.18
Vinegar
4.28
4.9
4.73
4.60
4.85
4.49
4.92
4.33
5.00
4.26
4.52
32,810
0.23
Granite W & R
4.86
4.32
4.26
5.07
4.76
4.58
4.78
4.47
4.93
4.33
4.55
35,810
0.28
Vinegar
0
9.18
1.24
8.09
0
9.34
2.88
6.37
2.74
6.52
7.90
79,432,823
1.26
Stain.Stl. W & R
5.22
3.96
6.28
3.05
5.84
3.5
5.48
3.77
5.55
3.71
3.60
3,963
0.31
Vinegar
0
9.18
1.30
8.03
3.26
6.08
0
9.25
2.15
7.11
7.93
85,113,804
1.22
Rdtn = reduction 0 = <100