Table 1.

List of bacteria and controls used in the antimicrobial susceptibility tests.

Bacteria	Microdilution Antibiotic Positive Controls (ug/ml)	Microdilution Negative Controls
Gram negative bacteria		Blank: 100 μl CAMHB Growth control: 50 μl CAMHB: 50 μl inoculum 1% DMSO growth control: 1 μl DMSO in 50 μl CAMHB: 50 μl inoculum 2% DMSO growth control: 2 μl DMSO in 50 μl CAMHB: 50 μl inoculum Solvent growth control: 8.7 μl acetic acid: acetonitrile: water (1:2:7) in 50 μl CAMHB: 50 μl inoculum
Enterobacter cloacae	Ampicillin 128, 64, 32, 16, 8, 4, 2, 1, 0.5, and 0.25
Klebsiella oxytoca
Escherichia coli	Ampicillin 32, 16, 8, 4, 2, 1, 0.5, 0.25, 0.125, and 0.0625
Salmonella typhimurium
Pseudomonas aeruginosa	Gentamicin 32, 16, 8, 4, 2, 1, 0.5, 0.25, 0.125, and 0.0625
Gram positive bacteria
Enterococcus faecalis	Ampicillin 32, 16, 8, 4, 2, 1, 0.5, 0.25, 0.125, and 0.0625
Staphylococcus saprophyticus	Ampicillin 4, 2, 1, 0.5, 0.25, 0.125, 0.0625, 0.031, 0.016, and 0.008
Staphylococcus aureus
Streptococcus pyogenes

CAMHB, Cation-Adjusted Mueller-Hinton broth.