Quote Originally Posted by kb3lms View Post

At this point, how much ammonium hydroxide is used? I am ordering materials from the Formulary and want to make sure I get enough. Would I be correct in understanding that it is a fairly small amount?

It really depends on batch size.

I use about 25 ml of 28% Ammonium Hydroxide for about 250 ml of emulsion, but this depends on quite a few things such as the "real" concentration of the Ammonia solution. It is subject to changes due to evaporation of NH3 gas. So, I order about 250 ml at a time and it lasts me for about 5 - 10 batches depending.