Katadyn Micropur Tablets are the only EPA-registered purification tablets on the market and are effective against cryptosporidium, giardia, bacteria and viruses. Features: Leaves water with a clear, fresh taste - no chlorine odor or residue Requires a 15 minute wait time for bacteria and viruses, and a 30 minute to 4-hour wait time for cysts like Giardia and Cryptosporidia (depends on water quality) Each tablet is individually sealed for maximum effectiveness

Contents: Chlorine Dioxide Output: 1 tablet treats 1 quart (1 liter) of water Capacity: 30 tablets