So I have been wanting to add some water purifications to my pack and really have no idea which ones to get. So can anyone help me out. I have a few questions.
1) Does Brand matter, I'm leaning toward Katadyn
2) Is there any big differance between the tablets on the market.
3) Is there a standard of certification that these water tablets have? Katadyn states something like that?
4) Do they expire?