Table 2.

Antibacterial susceptibility of chlorhexidine acetate against S. aureus and E. coli.

Concentration (μg/mL)	S. aureus (ATCC6538)		E. coli (8099)
	Mean diameter of inhibition zone (SEM ± S) (mm)	Variation coefficients (%)	Mean diameter of inhibition zone (SEM ± S) (mm)	Variation coefficients (%)
3.91	10.25 ± 0.53	5.21	Ns	Ns
7.8125	12.13 ± 0.69	5.73	10.81 ± 0.80	7.39
15.625	15.00 ± 0.80	5.35	12.44 ± 0.56	4.53
31.25	16.69 ± 1.13	6.78	14.69 ± 0.84	5.74
62.5	18.00 ± 0.71	3.93	16.25 ± 0.76	4.65
125	19.19 ± 0.59	3.1	17.63 ± 0.58	3.3
250	21.13 ± 0.69	3.29	19.00 ± 0.80	4.22
500	21.63 ± 1.09	5.06	20.94 ± 0.68	3.24
1000	23.88 ± 0.69	2.91	21.83 ± 0.52	2.37
2000	25.38 ± 0.58	2.3	23.06 ± 0.62	2.7