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. 2022 May 30;12(6):571. doi: 10.3390/membranes12060571

Table 2.

Antibacterial activity rating associated with percentage reduction of bacterial growth.

Antibacterial Activity Value (A) Efficacy Rating A Value Reduction (%)
2A<3 Good Effect Level 1 90
2 99
3 99.9
A3 Excellent Effect Level 4 99.99
5 99.999