I’ve heard the Lifesaver bottle advertised on The Survival Podcast, but was not excited about it until I saw this TED Talk video from 2009 of Lifesaver’s inventor and CEO Michael Pritchard’s presentation at Oxford, England.
The Lifesaver system filters out contaminants larger than 15 nanometers. It’s 100% effective against the 25 nanometer sized polio virus and other water borne viruses. And certainly 100% effective in filtering considerably larger bacteria and infectious cysts.
The demonstration is very impressive. Gather the water through the base, pump a few times by hand like a big water squirt gun, uncap the top and immediately get pure sterile safe drinking water from out of the most horrific sources. Very important for disaster relief and economical for day to day off-grid usage.