Quote Originally Posted by Ian Grant View Post

Strangely what I don't see is how changing certain parameters has large effects on the resulting emulsion, something I learnt very ealry on.

I'm not quite sure if I'm addressing your statement about "parameters", but I'll offer that I've learned (the hard way) that time/temp/reagent conc. during "finishing" (sulfur/gold) can be critical when trying to squeeze another stop or two from an emulsion. Some of the procedures are probably easier done a large scale as opposed to a basement lab scale.