Micropur MP1 water purifier tablets are for the emergency disinfection of drinking water. When used as directed, the tablets make contaminated water suitable for drinking. Micropur MP1 water purifier tablets are for use by campers, hikers, militaries, emergency organizations, and anyone needing to drink water of questionable microbiological quality. Effective against viruses, bacteria, and cysts - such as Giardia and Cryptosporidium. To view videos on additional Katadyn products, click here.