I mixed up some collodion using lithium bromide and lithium iodide. Both salts are soluble in ether/ethanol, so it was a pretty straight forward process. I added both salts to the ether and ethanol, mixed until dissolved, then added the collodion USP. It was a pale yellow color, similar to the cadmium version. Since there is no Potassium in the formula, there is no potassium bromide precipitate to worry about. I aged it for one day then shot a plate.
Ripened 1 day
At one day it already behaves different than the cadmium version. Using my standard setup and exposure time, I was able to get an image, but it was flat and foggy. The same shot with the cadmium version I was just getting a white plate at various exposures. Unfortunately I didn’t vary my exposure times to see if a shorter time would have given a decent plate. I was testing a series of formulas, and I just thought it need more ripening.
Ripened 9 days
My first plate again was flat and foggy, but better than the first shot at one day. This time I varied the time to see if I could get a plate with good tone, contrast and no fog. Well, I did! My typical exposure time using my standard shot is 6 to 8 seconds, maybe down to 5 for some formulas. Well, the all lithium formula gave me an exposure time of 2 seconds. Nice contrast and tones with no fog. This might come in handy when doing in-studio portraits. It may actually be too fast for some conditions using a fast lens.
Now I need to see how long this formula stays fast. Will it degrade quickly?
To be continued…