yaeyama

Recipes 

Hi:

I have a 1 gallon jug which contains a 50 gram sulphite / water solution, used for equipment sanitation. I have only started using it yesterday, yet the cap is already showing signs of rust! I will try to find another cap ASAP, but I am currently using this jug twice daily. Should I be worried about the slight rust affecting the sanitation and risk spoiling the wine batch?

Thanks in advance.