I am new to the forum and would appreciate any guidance on the below inquiry. Thank you kindly in advance.
I am employing Silver Nitrate solution (205c, 240 ml) purchased from Sirchie on test sheets to expose latent prints. The prints are not developing and the sheets remain a fairly consistent white with minimal color change. Some sheets expose faint prints when exposed to black light but this step should not be required. Even those tests provide inconsistent results.
Has the spray turned or could there be another cause?
You could try using the spray method to dampen the entire surface. Development could take awhile from 1 min to 20 mins, or more. From my experience, I treated my test prints with Silver Nitrate Solution for 1-20 minutes (or until I see developed prints in gray/ black color), bathe in water to remove excess silver nitrate, and let them dry under sunlight or UV lamp to complete the development.
Sometimes the fingerprint itself may not have enough salt deposited onto the surface, which makes this challenging to develop prints using Silver Nitrate technique.