1 micron filter Cons: Doesn't remove viruses Not suggested for Intercontinental journey Will not filter chemicals or pesticides Although this filter bottle doesn’t filter out viruses, it does remove almost all germs and protozoa. A 0.one micron filter lessens amounts of contamination to give you clear ingesting water. a https://alkaline-water-bottle-wit00988.tribunablog.com/indicators-on-water-bottles-plastic-you-should-know-27654887