Quote Originally Posted by eggshell
Wm, do you mean my ferric oxalate might have turned bad? It's 2 months old. Refrigerated when not in use. Thanks.
2 months old is not too old for FO. Are you using the evil #2 FO in your mix or not? If you are not using the restrainer sometimes you get fogging. You might want to add one drop to avoid fogging.