Amazon.com From mountaineering base camps to international aid stations, the Katadyn KFT Expedition water filter is an ideal potable drinking water solution for large, mobile groups. Often used by big trekking outfits and relief organizations around the world, it's practically indestructible and intuitively easy to use. An exclusive, silver-impregnated ceramic element produces up to 26,000 gallons before it needs replacing, and a durable stainless steel design is built to withstand extreme environments and daily use. Offering the highest flow rate of any portable filter at one gallon per minute, the Expedition comes complete with a pre-filter and convenient carrying bag. Specifications 26,000-gallon capacity Measures eight by 23 inches (W x H) NATO # 4610123490574 Outputs one gallon per minute Cleanable 0.2 micron ceramic depth filter 183.4-ounce weight Warranty All Katadyn products include a limited three-year warranty against defects in materials and workmanship. About Katadyn Water treatment products are in high demand for outdoor enthusiasts, international travelers, relief groups, and preparedness-minded individuals. The Swiss company Katadyn provides users with a water system for every need, including traveling, camping, backpacking, sailing, paddling, fishing, biking, and anytime you need to, as the company says, "make water drinking water." Product Description For years, the proven performance of the Katadyn KFT Expedition Microfilter has made it the choice water treatment for groups or those in need of high output filtration. The high capacity filter produces up to 100,000L of treated water. The 0.2 micron ceramic element screens out harmful organisms such as bacteria and protozoan cysts. This highly durable, steel construction filter can produce an impressive 4L per minute of clean drinkable water. When the output slows down, the element can be revived by simply scrubbing. Made in Switzerland.