Replacement 50cl filter for the Water-to-Go filter bottles. Contains Water-to-Go filter technology that eliminates up to 99.9999% of all Bacteria, Viruses, Chlorine, Fluoride and Heavy Metals such as Lead to give you safe, healthy, clean drinking water. GO! filters can be safely used to filter 130 litres of water in a Water-to-Go water bottle. This represents about two months water if the bottle is fully filled four times per day. Comes with a time strip telling you when to renew your filter. GO! filters remove up to 99.9999% of: Metals and chemicals including Chlorine, Fluoride Chromium, Mercury, Nickel, Copper, Iron Lead, Gold, Silver and Aluminium Volatile Organic Compounds including Formaldehyde Water borne viruses including Norwalk, Hepatitis A, Tota Virus, Polio, Adenoviruses, Enteroviruses, Reoviruses Bacteria including: Coliform, E.Coli, Cholera, Typhus Dysentery, Botulism, Vibrio Disease, Campylobacteriosis Leptospirosis Weils Disease, Legionella (Legionnaires Disease and Pontiac Fever) Water borne pathogens and oocystes (protozoa) including: Giardia lamblia Fasciolopsiasis Taeniasis Tapeworm Echinococcosis Ascariasis Coenorosis Schistosomiasis Cryptosporidium Tryonosoma (Sleeping Sickness) Threadworm Guinea Worm Hookworm Roundworm Pinworm Onchiocerca Fasciola Hepatica/Liver fluke Testing results are verified by 4 testing houses across the world. Water-to-Go filters are intended to remove contamination from water. Filters will become inefficient if used with additives such as isotonic powders, cordials, juices etc. Not recommended to filter urine for drinking purposes. Not effective on sea water. Biodegradable filter membrane and recyclable plastic end caps and shroud cover.