Table 1 Decimal reduction times (D-values) for the bacteria in different chemical agent solutions.
Bacteria | Disinfectant concentration | Survivors1 | D value | 2t = n × D | 2t = n × D | |
|---|---|---|---|---|---|---|
(%) | (mg/L) | logN | (min) | 3n = 6-log10 | n = 12-log10 | |
(min) | (min) | |||||
SODIUM DICHLORO ISOCYANURATE(pH = 7.0) | ||||||
A. calcoaceticus | 0.1 | 1000 | -0.17t | 5.9 | 35.4 | 70.8 |
E. cloacae | 0.1 | 1000 | -0.21t | 4.7 | 28.2 | 56.4 |
E. coli | 0.1 | 1000 | -0.17t | 5.9 | 35.4 | 70.8 |
S. aureus | 0.1 | 1000 | -0.20t | 5.0 | 30.0 | 60 |
S. marcescens | 0.1 | 1000 | -0.23t | 4.3 | 25.8 | 51.6 |
B. stearothermophilus | 0.2 | 2000 | -0.22t | 4.4 | 26.6 | 53.3 |
B. subtilis | 0.2 | 2000 | -0.26t | 3.8 | 22.5 | 45 |
SODIUM HYPOCHLORITE (pH = 7.0) | ||||||
E. coli | 0.05 | 500 | -0.16t | 6.1 | 36.4 | 72.9 |
B. stearothermophilus | 0.05 | 500 | -0.106t | 9.4 | 56.4 | 112.8 |
B. subtilis | 0.05 | 500 | -0.097t | 10.3 | 61.8 | 123.6 |
B. stearothermophilus | 0.1 | 1000 | -0.28t | 3.5 | 20.9 | 41.8 |
B. subtilis | 0.1 | 1000 | -0.31t | 3.2 | 19.2 | 38.3 |
SODIUM HYPOCHLORITE(pH = 7.0) | ||||||
A. calcoaceticus | 0.025 | 250 | -0.16t | 6.2 | 37.3 | 74.6 |
E. cloacae | 0.025 | 250 | -0.13t | 7.5 | 44.8 | 89.6 |
E. coli | 0.025 | 250 | -0.13t | 7.5 | 45.1 | 90.1 |
S. aureus | 0.025 | 250 | -0.21t | 4.7 | 27.9 | 55.8 |
S. marcescens | 0.025 | 250 | -0.149t | 6.7 | 40.1 | 80.2 |
B. stearothermophilus | 0.025 | 250 | -0.041t | 24.0 | 144.0 | 288.0 |
B. subtilis | 0.025 | 250 | -0.048t | 20.6 | 123.6 | 247.2 |
GLUTARALDEHYDE(pH = 7.4) | ||||||
A. calcoaceticus | 2.0 | 20000 | -0.21t | 4.7 | 28.2 | 56.4 |
E. cloacae | 2.0 | 20000 | -0.15t | 6.7 | 40.2 | 80.4 |
E. coli | 2.0 | 20000 | -0.14t | 7.1 | 42.6 | 85.2 |
S. aureus | 2.0 | 20000 | -0.17t | 5.9 | 35.4 | 70.8 |
S. marcescens | 2.0 | 20000 | -0.20t | 5.0 | 30.0 | 60.0 |
B. stearothermophilus | 2.0 | 20000 | -0.04t | 25.0 | 150.0 | 300.0 |
B. subtilis | 2.0 | 20000 | -0.04t | 25.0 | 150.0 | 300.0 |
FORMALDEHYDE(pH = 6.5) | ||||||
A. calcoaceticus | 0.5 | 5000 | -0.19t | 5.2 | 31.2 | 62.4 |
E. cloacae | 0.5 | 5000 | -0.22t | 4.5 | 27.0 | 54 |
S. marcescens | 0.5 | 5000 | -0.48t | 2.1 | 12.6 | 25.2 |
B. stearothermophilus | 0.5 | 5000 | -0.10t | 10.9 | 65.4 | 130.8 |
B. subtilis | 0.5 | 5000 | -0.13t | 11.8 | 70.8 | 141.6 |
CHLORHEXIDINE(pH = 6.2) | ||||||
A. calcoaceticus | 0.4 | 4000 | -0.24t | 4.1 | 24.6 | 49.2 |
E. cloacae | 0.4 | 4000 | -0.12t | 8.3 | 49.8 | 99.6 |
E. coli | 0.4 | 4000 | -0.34t | 3.0 | 18.0 | 36.0 |
S. aureus | 0.4 | 4000 | -0.17t | 5.9 | 35.4 | 70.8 |
S. marcescens | 0.4 | 4000 | -0.25t | 4.0 | 24.0 | 48.0 |
B. stearothermophilus | 2.0 | 20000 | -0.11t | 9.1 | 54.6 | 109.2 |
B. subtilis | 2.0 | 20000 | -0.15t | 6.7 | 40.2 | 80.4 |
MINNCARE 5 (pH = 2.3) | ||||||
A. calcoaceticus | 1.0 | 10000 | -0.30t | 3.4 | 20.4 | 40.8 |
E. cloacae | 1.0 | 10000 | -0.29t | 3.5 | 21.0 | 42.0 |
E. coli | 1.0 | 10000 | -0.15t | 6.7 | 40.2 | 80.4 |
S. aureus | 1.0 | 10000 | -0.25t | 4.0 | 24.0 | 48.0 |
S. marcescens | 1.0 | 10000 | -0.28t | 3.6 | 21.6 | 43.2 |
B. stearothermophilus | 1.0 | 10000 | -0.11t | 9.1 | 54.6 | 109.2 |
B. subtilis | 1.0 | 10000 | -0.17t | 5.9 | 35.4 | 70.8 |
HYDROGEN PEROXIDE(pH = 3.3) | ||||||
E. cloacae | 1.5 | 15000 | -0.56t | 1.8 | 10.8 | 21.6 |
E. coli | 1.5 | 15000 | -0.31t | 3.2 | 19.2 | 38.4 |
S. aureus | 1.5 | 15000 | -0.30t | 3.4 | 20.4 | 40.8 |
B. stearothermophilus | 26.5 | 265000 | -0.21t | 4.7 | 28.2 | 56.4 |
B. subtilis | 1.5 | 15000 | -0.02t | 55.2 | 331.2 | 662.4 |