A Killer Value in Outside Magazine's Gear Guide!
single adapter fits the 11 ounce filter snugly to Nalgene bottles and
Platypus containers; a two-liter Platypus is included." - Outside Magazine
Water filters are everywhere. To qualify as a "purifier," however – one
that actually kills viruses and other nasties – a system must meet a
stringent EPA standard. MSR has come up with a clever way to do so with
their new Guardian Purification System. Built around their Guardian
microfilter – which quickly and easily filters out bacteria and
protozoa – the System adds ViralStop, a chlorine-based purifier. Filter
your water into the included 2+ liter bottle, add 5 drops per liter of
the ViralStop solution, wait 5 minutes, and shazam: pure water.