b Tested in sodium chloride 0.9%.
c Powder fill formulation tested.
d Ampicillin component. Ampicillin in a 2:1 fixed-ratio concentration with sulbactam.
e Trimethoprim component. Trimethoprim in a 1:5 fixed-ratio concentration with sulfamethoxazole.
f Not specified whether concentration refers to single component or combined components.