Uncle Goose, could you detail your safety procedures and estimate your costs please?
Safety procedures are quite rudimentary, just gloves and safety glasses. The whole procedure of heating up and letting it react is of course done outside because of the toxic fumes. Cost?? well I got 70grams of pure silver in pellet form and paid about 58euro or so for it, the Nitric acid is less than 1 Euro or so since you using such a small quantity. In the end I got about 98grams of silver Nitrate, so I saved myself over 300euro just by doing it myself. I've done a few salt prints with it already so it's work pretty well.
Sure, I could give you a boring explanation who I really am but I rather let the Origami do the talking.