aha,czyli nie używałeś ale za to wiesz że to popierdółka i dodatkowo się zapycha , ok
Cóż, firma która filtr produkuje ma to dość dobrze udowodnione. Badania w dwóch niezależnych, akredytowanych laboratoriach. Z punktu widzenia zwykłego użytkownika ciężko wymagać więcej.
They rely on the fact that most people will look at the LSHTM logo and assume it’s therefore meeting standards, as 99.9% sounds pretty good doesn’t it… The only problem is that US EPA standard (also listed on their own website – see https://www.watertogo.eu/additional-testing/ – and which form the basis of most international standards) for virus reduction is 99.99% (WTG = 99.937 to 99.982% reduction) and for bacterial reduction it’s 99.9999% (WTG = 99.9837 to 99.9992 reduction). That might not sound like much of a fail, but this can represent significant numbers of potentially infectious bacteria and viruses. There’s a reason why companies who use the same filter cartridge in the US state “This product is for use with municipally treated water only!”