Darkroom solution question?

Question

We have a bunch of older bleach, solution, and developer used for the darkroom and i was wonder how old is too old for using and could i use it anyway. it might be 5-10 years old.

Answer 1

If it was in a can unopened then it might be still good. Or if concentrated in an unopened bottle. I woudl say try it if its for paper developing. Other than that i dont know about film unless youre willing to waste a roll of film and try it.

Answer 2

Shoot a roll of film on someting not so very important and develope it and see if the chemistry still works if it works on the negatives it will work on the paper too.