Potassium:
In traditional photography development processes, potassium compounds are commonly used in various stages.
Potassium carbonate (K2CO3), for example, can be utilized as a buffering agent or to adjust the pH level in developer solutions. It helps maintain the proper chemical balance and stability during the development process.
Potassium hydroxide (KOH) can be found in some specialized developers, particularly those used for lithographic processes or certain alternative photographic techniques.
Potassium bromide (KBr) is another compound that can be found in photographic processes. It is often used as an additive in developers to promote even development and reduce fogging in certain types of films.
Potassium alum (KAl(SO4)2) may be employed as a hardening agent in fixing baths to enhance the durability and longevity of the developed images.
