Bad news. Yesterday I coated a large number of sheets of paper with my emulsion. The emulsion was made about ten days ago. It looked great in the beginning, now looks like shit. I got a lot of fogging and stains on the prints. I believe that the emulsion has to be used right away after preparation or within the next couple of days. I think I'll give up the idea to make my own emulsion, I already spent the equivalent in silver nitrate of half kilo of factory grade emulsion...

Perhaps it is the tap water... I don't know why but I had occasionally pepper grains with distilled water. Using inert gelatin delivers pepper grains as well, a very flat contrast and very ugly tones. With food gelatin the tones are great, no fogging at all, nice contrast and the emulsion spread easily, without evident bubbles. It sticks nice on glass, without subbing or glass manipulation. But then... appears to have the shelf life of a fresh yogurt...