Quote Originally Posted by Jaq View Post

I recently was given a large bucket of sodium carbonate. I know that this chemical is used in a photographic process, I just can't find out which one from the internet.
Do any of you know?

Thanks for the info.


Ascertain in what form is the sodium carbonate (anhydrous? monohydrate? crystal?). It can be used to make up most paper developers, some (few) film developers.

Also, a 2 % solution after print fixing and before washing of fiber-based papers speeds up your wash time.
John, Mount Vernon, Virginia USA