Test organism

Mean bacterial counts (CFU/ml) at 10−6 dilutiona

Test suspensiona (log CFU/ml)

Log reduction in bacterial countsa

Suspension for validation

Experimental conditions

Neutralizing solution

+Neutralized test product

80% (v/v)

40% (v/v)

1% (v/v)

S. aureus CIP 4.83

Assay 1

Assay 2

57

97

71

106

64

106

74

115

7.23

7.52

>5.09

>5.38

>5.09

>5.38

<2.71

<3.00

P. aeruginosa CIP 103467

Assay 1

Assay 2

45

121

46

107

50

112

43

101

7.21

7.58

>5.06

>5.43

>5.06

>5.43

<2.69

3.24

E. coli CIP 54117

Assay 1

Assay 2

61

104

69

94

58

89

65

85

7.31

7.55

>5.16

>5.40

>5.16

>5.40

>5.16

4.49

E. hirae CIP 58.55

Assay 1

Assay 2

88

52

84

50

91

65

90

48

7.46

7.27

>5.32

>5.13

>5.32

>5.13

<2.95

<2.76