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Table 3 Concentration ranges and breakpoints of disinfectants used to determine the MIC24 and MBC24 values for B. cepacia ATCC 10673 and E. faecalis ATCC 29212

From: Comparative efficacy of hospital disinfectants against nosocomial infection pathogens

Tube NO

MIC24 = MBC24 (mg/L)

MIC24 = MBC24 (mg/L)

E. faecalis ATCC 29212

B. cepacia ATCC 10673

2% Steranios

DH

MQ

2% Steranios

DH

MQ

1

5035.00

5000.00

4500.00

5035.00

5000.00

4500.00

2

2517.50

2500.00

2250.00

2517.50

2500.00

2250.00

3

1258.75

1250.00

1125.00

1258.75

1250.00

1125.00

4

629.38

625.00

562.50

629.38

625.00

562.50

5

314.69

312.50

281.25

314.69

312.50

281.25

6

157.34

156.25

140.63

157.34

156.25

140.63

7

78.67

78.13

70.31

78.67

MIC = MBC = 78.13

MIC = MBC = 70.31

8

39.34

39.06

35.16

39.34

39.06 TO*

35.16 TO*

9

19.67

19.53

17.58

19.67

19.53

17.58

10

9.83

MIC = MBC = 9.77

8.79

MIC = MBC = 9.83

9.77

8.79

11

4.92

4.88 TO*

4.39

4.92 TO*

4.88

4.39

12

2.46

2.44

MIC = MBC = 2.20

2.46

2.44

2.20

13

1.23

1.22

1.10 TO*

1.23

1.22

1.10

14

0.61

0.61

0.55

0.61

0.61

0.55

15

MIC = MBC = 0.31

0.31

0.27

0.31

0.31

0.27

16

0.15 TO*

0.15

0.14

0.15

0.15

0.14

17

0.08

0.08

0.07

0.08

0.08

0.07

18

0.04

0.04

0.03

0.04

0.04

0.03

19

0.02

0.02

0.02

0.02

0.02

0.02

20

0.0096

0.0095

0.0086

0.0096

0.0095

0.0086

12

0.0048

0.0048

0.0043

0.0048

0.0048

0.0043

22

0.0024

0.0024

0.0021

0.0024

0.0024

0.0021

23

0.0012

0.0012

0.0011

0.0012

0.0012

0.0011

24

0.0006

0.0006

0.0005

0.0006

0.0006

0.0005

25

0.0003

0.0003

0.0003

0.0003

0.0003

0.0003

26

Negative controls (disinfectant + MHB)

27

Positive (inoculum + MHB)

  1. *TO Turbidity was observed
  2. *At this concentration and lower (Up to tube number 25) turbidity was observed and indicates a non-bactericidal range of disinfectants