Table 3

The minimum inhibitory concentrations (MIC) for chemical agents for the reduction of bacteria populations over 6-log₁₀.

Bacteria

Pseudomonas aeruginosa

Pseudomonas diminuta

Pseudomonas fluorescens

Pseudomonas alcaligenes

Pseudomonas picketti

Flavobacterium aureum

Acinetobacter lowffi

MIC test

mg/L

%

mg/L

%

mg/L

%

mg/L

%

mg/L

%

mg/L

%

mg/L

%

Agent (initial concentration & pH)

Ethanol (70%; pH = 7.2)

175000

17.5

87500

8.75

87500

8.75

87500

8.75

87500

8.75

87500

8.75

87500

8.75

Sodium Hypochlorite (0.5%; pH = 11.9)

2500

0.25

2500

0.25

2500

0.25

2500

0.25

2500

0.25

2500

0.25

2500

0.25

PAA (0.45%) + H₂O₂ (2.2%) (pH = 2.3)

1125

0.11

562

0.056

140

0.014

280

0.028

1125

0.11

1125

0.11

1125

0.11

5500

0.55

2750

0.275

680

0.068

1368

0.14

5500

0.55

5500

0.55

5500

0.55

Sodium Hydroxide (0.4%; pH = 12.8)

3000

0.3

1500

0.15

1500

0.15

750

0.075

3000

0.3

3000

0.3

4000

0.4

Citric acid (0.5%; pH= 2.5)

2500

0.25

2500

0.25

2500

0.25

2500

0.25

5000

0.5

2500

0.25

600

0.06

Hydrochloric Acid (0.3%; pH= 0.3)

1560

0.16

1560

0.16

780

0.078

1560

0.16

3125

0.31

1560

0.16

390

0.039

Sodium Bisulfite (1.0%; pH= 4.0)

780

0.078

780

0.078

780

0.078

390

0.039

780

0.078

780

0.078

780

0.078

PAA – peracetic acid H₂O₂ – hydrogen peroxide

Penna et al. BMC Public Health 2002 2:13   doi:10.1186/1471-2458-2-13