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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
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Antimicrobial Resistance & Infection Control

ISSN: 2047-2994

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