Well, thinking about this for a bit, I realized that I use about 5 - 10 drops in 500 grams of 10% gelatin. So, this is way more than I usually use. Looking back at my notes, this is what I recommended.
I pulled the figure from my notes, 6 drops per 120 g of emulsion/gelatin. since I was making plain gelatin to use as diluting gel after the mix, I was adding the preservative.
There is no such thing as taking too much time, because your soul is in that picture. -Ruth Bernhard