TABLE 4.

Comparison of in vitro susceptibility testing results for quality control strain E. coli ATCC 25922 using MHA and five other media for each antimicrobial agent tested^a

Antimicrobial agent	Inhibition zone diam (mm)
	MHA	AOA	AOASS	FMM	FMMSS	MA
AMX	23 ± 1.19	24 ± 0	23.56 ± 2.73	31.33 ± 2.31	30.08 ± 2.42	27.33 ± 1.15
SXT	29.12 ± 1.55	0	0	0	0	0
ENR	37.87 ± 1.23	20 ± 0	19.06 ± 2.05	20.67 ± 1.15	19.23 ± 2.05	9.33 ± 1.15
OTC	23.75 ± 0.45	0	0	0	0	0
OA	22.67 ± 1.15	9.33 ± 1.15	9 ± 1.51	0	0	0

^aE. coli ATCC 25922 was incubated at 35°C for 16 to 20 h. All data are means ± standard deviations.