MSR Guardian Water Purifier promises fast, safe drinking water from almost any source By Aaron Heinrich September 29, 2015 The MSR Guardian can filter and purify up to 2.5 liters of water per minute, ...
Seven years ago, the US military had a dilemma: its service members, based in the world’s harshest and most resource-deprived locales, needed access to clean drinking water. But there wasn’t a ...
Two common ways of filtering water are portable pump filters, such the MSR Guardian, and bottles with built-in filter straws, like this one from Vapur. Korean startup Purisoo combines those two ...
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