Pristine Water Purification System makes lake, river, or tap water safe for drinking by producing a dilute chlorine dioxide solution.  It is 99.9999% effective against bacteria, cysts/parasites, and viruses, including Giardia and Cryptosporidium!  Pristine Water Purification System is perfect for treating larger volumes of water, such as a water jugs or gravity bags.  This set comes with a measuring cup, for mixing purposes, and a resealable pouch to keep your set together while traveling! 
 
For smaller volumes of water, such as water bottles, please refer to Pristine Water Purification System 30ml.