Let me clarify that post.

Strong base can affect raw emulsion during coating and drying due to pH shifts and the low (relatively) water content of the emulsion during coating. Therefore, if the surface pH of the substrate is alkaline, the emulsion may be fogged.

But, if you have a strong base in a developer, the effect is much lower and it can be used there safely. Many developers contain very strong bases. However, the strong bases give high activity and if this is not controlled you can get fog there too.

So, as a summary, you should coat at pH 5.5 to 7 for best results. Above that and you can induce fog and this happens in the presence of strong base. Ammonium Hydroxide is even worse due to its solvent effects. Strong base can be used in developers with no serious problem except their high activity. This can lead to fog.

PE