I have been using an "extra" bucket fermenter to mix up and store my sanitizer (iodophore) for the past few times. It now has a slight yellow tinge everywhere. Is it still Ok to use it as a primary?
I used my old bucket on my last batch, I guess that it is about 30 years old. It works fine. The biggest concern is not the color but if you have it clean. That is very possible but once it is scratched up it is tougher and is more of a concern.