Developed in conjunction with the U.S. military, the MIOX Purifier offers unrivaled ease of use and reliability for purifying large volumes of water, making it ideal for outdoor recreation, travel, and disaster-preparedness. It works by creating a powerful dose of mixed oxidants (MIOX), which is then added to untreated water, inactivating all viruses, bacteria, Giardia, and Cryptosporidium (which even iodine doesnt kill). And since the MIOX Purifier needs only common camera batteries and salt to operate, it's maintenance-free, delivering more water, more easily than any purifier ever before. The MIOX Purifier represents a revolution in water treatment. It's ultralight, compact, and easy to use—with no pumping, maintenance, or iodine required. * No pumping required Just add water, shake, and press a button. * Purifies water without iodine: No health risk or unpleasant iodine taste. * Great for large volumes of water: Perfect for groups or extended trips. * Ultralight and compact: Fits in your pocket to go anywhere. * Reliable purification: Inactivates all viruses, bacteria, Giardia, and Cryptosporidium. Dwell times- Viruses, bacteria: 15 min. Giardia: 30 min. Cryptosporidium: 4 hrs. Weight: Pen: 3.5 oz./99 g Kit: 8 oz./227 g Kit includes- MIOX Purifier, salt, batteries, safety-indicator strips, instruction booklet, quick-reference card, and storage sack.