Table 2 Three-month assessment of microbial death at 15 s for alcohol solutions at different pHs

1.0

Ethanol

55.39 ± 1.29

8.83 ± 0.97*

97.39 ± 0.52

95.92 ± 0.90

Isopropyl alcohol

76.23 ± 0.93^†

59.68 ± 2.02*^†

37.75 ± 0.91^†

−3.97 ± 1.74*^†

4.0

Ethanol

52.45 ± 0.93

7.23 ± 0.93*

73.92 ± 0.71

62.25 ± 1.23*

Isopropyl alcohol

83.70 ± 1.18^†

65.93 ± 0.93*^†

81.86 ± 1.19^†

75.51 ± 0.68*^†

5.0

Ethanol

57.60 ± 1.66

7.23 ± 0.93*

84.69 ± 0.68

76.98 ± 0.86*

Isopropyl alcohol

52.94 ± 1.10^†

27.33 ± 0.93*^†

48.07 ± 0.52^†

17.01 ± 4.14*^†

6.0

Ethanol

100.00 ± 0.00

98.28 ± 0.57

99.09 ± 0.52

94.90 ± 0.68*

Isopropyl alcohol

45.10 ± 0.93^†

28.18 ± 2.09*^†

56.69 ± 0.86^†

14.97 ± 0.68*^†

7.0

Ethanol

94.61 ± 0.93

88.11 ± 0.93*

85.60 ± 0.86

77.89 ± 1.02*

Isopropyl alcohol

97.06 ± 0.74

92.04 ± 0.76*^†

93.20 ± 0.68^†

90.03 ± 1.37^†

9.0

Ethanol

32.47 ± 1.29

7.23 ± 0.93*

48.07 ± 1.04

2.04 ± 0.68*

Isopropyl alcohol

61.64 ± 1.66^†

24.51 ± 3.08*^†

79.02 ± 0.71^†

67.69 ± 0.68*^†