Response to chemicals in b&w photo processing

I have an article on mixing developers that details developer components and what each one does. You will find it here:

http://unblinkingeye.com/Articles/Developers/developers.html

The active ingredient in fix is either sodium thiosulfate or ammonium thiosulfate. In addition, fix usually contains sodium sulfite, acetic acid, boric acid, and potassium alum. Stop is usually a 3% solution of acetic acid.

[ Previous | Next ]