Table 4.
The number (%) of isolates with MICs and MBCs
| Disinfectants | N(%) | N(%) | N(%) | N(%) | N(%) | N(%) | N(%) | |
|---|---|---|---|---|---|---|---|---|
| Serial dilution → | 1/8 | 1/16 | 1/32 | 1/64 | 1/128 | 1/256 | 1/512 | |
| Ethanol 70% | Active ingredients → | 8.75% | 4.37% | 2.18% | 1.09% | 0.54% | 0.27% | 0.13% |
| MIC | 12(10) | 65(54.2) | 30(25) | 11(9.2) | 2(1.7) | _ | _ | |
| MIC + EDTA | 1(0.8) | 7(5.8) | 32(26.7) | 68(56.7) | 7(5.8) | 4(3.3) | 1(0.8) | |
| MBC | 59(49.2) | 34(28.3) | 25(20.8) | 1(0.8) | 1(0.8) | _ | _ | |
| MBC + EDTA | 3(2.5) | 25(20.8) | 51(42.5) | 34(28.3) | 6(5) | 1(0.8) | _ | |
|
Sodium hypochlorite 5% |
Active ingredients → | 0.62% | 0.31% | 0.15% | 0.078% | 0.039% | 0.019% | 0.0097% |
| MIC | _ | _ | _ | 15(12.5) | 50(41.7) | 30(25) | 25(20.8) | |
| MIC + EDTA | _ | _ | _ | 6(5) | 12(10) | 24(20) | 78(65) | |
| MBC | _ | _ | _ | 33(27.5) | 56(46.7) | 30(25) | 1(0.8) | |
| MBC + EDTA | _ | _ | _ | 14(11.7) | 24(20) | 59(49.2) | 23(19.2) | |
| Dettol 4.8% | Active ingredients → | 0.6% | 0.3% | 0.15% | 0.075% | 0.037% | 0.018% | 0.0093% |
| MIC | _ | _ | _ | 42(35) | 39(32.5) | 39(32.5) | _ | |
| MIC + EDTA | _ | _ | _ | 5(4.2) | 26(21.7) | 44(36.7) | 45(37.5) | |
| MBC | _ | _ | _ | 65(54.2) | 42(35) | 13(10.8) | _ | |
| MBC + EDTA | _ | _ | _ | 32(26.7) | 43(35.8) | 37(30.8) | 8(6.7) | |
| Sayasept- HP 2% | Active ingredients → | 0.25% | 0.125% | 0.062% | 0.031% | 0.015% | 0.0078% | 0.0039% |
| MIC -HP | _ | _ | _ | 50(41.7) | 38(31.7) | 30(25) | 2(1.7) | |
| MIC + EDTA | _ | _ | _ | 13(10.8) | 29(24.2) | 36(30) | 42(35) | |
| MBC | _ | _ | 2(1.7) | 63(52.5) | 45(37.5) | 10(8.3) | _ | |
| MBC + EDTA | _ | _ | _ | 24(20) | 47(39.2) | 41(34.2) | 8(6.7) | |
| Chlorhexidine 2% | Active ingredients → | 0.25% | 0.125% | 0.062% | 0.031% | 0.015% | 0.0078% | 0.0039% |
| MIC | _ | _ | _ | 71(59.2) | 36(30) | 13(10.8) | _ | |
| MIC + EDTA | _ | _ | _ | 27(22.5) | 33(27.5) | 43(35.8) | 17(14.2) | |
| MBC | _ | _ | 44(36.7) | 64(53.3) | 12(10) | _ | _ | |
| MBC + EDTA | _ | _ | 16(13.3) | 56(46.7) | 48(40) | _ | _ |
The cells (-) means is not MBC/MIC for any of isolates