So, awhile back I was screwing the cap on my StarSan bottle, and the cap cracked along the top. Then, a few weeks later, I was screwing on the other cap and the same thing happened. Heh. As a result, the caps don’t create a full seal, and until recently I never thought to use saran wrap to fix this.
I’m wondering: do I need to worry about evaporation having made the StarSan more acidic?