- Joined
- Oct 19, 1998
- Messages
- 498
I just got a glass jar of this that was about to be thrown away. Is there a way to tell how potent it is? It still looks dark pink/purple, and is granular, not clumped up. However I suspect that it is at least 10 years old. So how easy does it go bad? Also, if I remember for water disinfection you add until light pink, and for antiseptic use dark pink? Thanks!