Originally Posted by
balto charlie
I hate the fact fact that it can't handle freezing temps, if you forget to sleep with it on a cold adventure I wonder how much one damages the small tubes.
From what I read the filter isn't definitely unsafe after a freeze, but not to be trusted. So I'd be inclined to not worry too much about it if I had to use it for a bit until I could replace it. Maybe I am too cavalier.
The good news is they are cheap to replace at about $20 for the mini. if really worried you could carry a dry spare with only a small weight penalty at 2 ounces, not that I would.