The AutoFlow microfilter from MSR is hands-down the best gravity water filter we've tested. And test we did, putting it through the wringer on a 25-day winter Grand Canyon trip where we asked it do ...
The U.S. military asks them to create water filtration technology designed for troops. Global health nonprofits seek technologies from them to help filter safe drinking water in developing countries.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback