Bottle makes dirty water drinkable in seconds

telegraph.co.uk — Military chiefs are excited because the bottles, which can distill either 4,000 litres or 6,000 litres without changing the filter. The bottle can clean up any water - including fecal matter - using a filter that cuts out anything longer than 15 nanometres, which means that viruses can be filtered out without the use of chemicals. Sep 12, 2007 View in Crawl 4