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
|
-
1 Survivor Curve: log Nf = log No-1/D × t; No= bioburden; Nf= survival population; D-value = decimal reduction time; (-1/D) = slope. 2 t = n × D, where: t = total exposure time (min); n = log10 reduced cycles 3 t = n*D and n = 6-log10, t = the exposure time for a 6-log10 reduction in the bioburden (No) with a defined D-value4 t = n*D and n = 12-log10, t = the exposure time for a 12-log10 reduction in the bioburden (No) with a defined D-value 5MINNCARE = 0.45 % peracetic acid + 2.2 % hydrogen peroxide