highly significantp < .01
However, the addition of PHE induced a highly significant lowering ( p < .01) of pH values ranging from 4.44 to 4.62 to 4.78 and 4.93 in mean recorded, respectively, for PHE concentrations of 0%, 2%, 4%, and 6%.
However, the addition of PHE induced a highly significant lowering ( p < .01) of pH values ranging from 4.44 to 4.62 to 4.78 and 4.93 in mean recorded, respectively, for PHE concentrations of 0%, 2%, 4%, and 6%.