Six thousand liters of pure water from one bottle

And no wonder, so Life Saver bottle can really turn out to be an archy useful contraption in case of an emergency. Conventional filters used to purify water can weed out bacteria up to 200 nanometers in size. But with viruses (their size is on average about 25 nanometers) are not able to cope. Pritchard’s invention can clean up to six thousand liters of water (without changing the filter) from any muck, the dimensions of which are from 15 nanometers or more. This means that bacteria and viruses will not pass. Moreover, the use of chemical compounds is not required for filtration.
Life Saver bottle with nanofilter costs a lot - $ 385. But compared to the opportunity to save a life, it’s a penny.
via Ubergizmo , Telegraph.co.uk