MSR GUARDIAN PURIFIER
The U.S. military asked backcountry outfitter Mountain Safety Research (MSR) to create a device that could protect troops from waterborne illness anywhere they deploy.
The company came up with the Guardian Purifier, which uses medical-grade fibers to block out dangerous pathogens, such as bacteria, protozoa, and viruses, along with particulate matter like sediment and silt. Also, the device never requires a cleaning: It uses about 10 percent of the water it pumps up to flush out the blocked contaminants. Now it’s available to you. It debuted in August 2015. $350
source: popsci.com by Berne Broudy