At higher pH, bromoxynil was inert even at high concentrations.

At higher pH (7.4), the release rates increased with reaction solvent content.

They differ in their pH dependences: the activity of IIa increases at higher pH, whereas the IIb shows no or a slightly opposite pH dependence.

At a higher pH (4.8 and 5.4), L. acidophilus in higher quantities did not compete for binding sites occupied by G. vaginalis and M. curtisii.