Quote:
Originally Posted by ProfCrash
If you want to be really anal, you can get a steripen. They use UV light to purify water and are the size of a pen. Light weight, easy water filtration.
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How about a
15nm filter in a water bottle. It removes at least 99.9999% bacteria and at least 99.99% viruses, also (of course) any larger pathogens.