I opened a Trebla RA-4 bleach-fix bottle 1.5 years ago. I think most people said bleach keeps for long time. But when I tried to mix it, I think this bottle has gone bad. At the bottom and very top, I see hard residues. They do not exist with the unopened bottle.
Do you think this bleach-fix has gone bad? Or the residues are normal?
Do you think this bleach-fix has gone bad? Or the residues are normal?
