MSR's GravityWorks™ 4L Water Filter provides storage and filtration, delivering four liters of filtered water is just 2.5 minutes with no pumping- there's simply no easier or faster way to get safe water away from home even the most challenging situations. Ideal for bigger groups, the system's eight-liter capacity eliminates both the worry and hassle of keeping plenty of water around. Dispenses on demand for cooking, cleaning, and more. Just fill up the "dirty" reservoir and hang it above the "clean" reservoir. Water passes through the filter cartridge to provide clean, drinkable water. Meets all EPA & NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. Coli, Salmonella and Cholera.

• Effective: Meets all EPA & NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera
• Fast! Filters four liters in 2.5 minutes
• 8L capacity lets you easily transport and store water for groups
• Backflushes in four seconds, maintaining optimal performance with no additional parts or tools required.
• Proprietary Platy™ zip opening collects water easily?even in challenging situations
• Clean storage reservoir with shutoff clamp makes dispensing water a breeze
• Create a custom system to meet your personal needs by adding accessories
• Not effective against viruses
• Filter media: Hollow Fiber
• Filter pore size: .2 microns
• Flow (L/min) 1.75 liters per min
• Cartridge life: 1501 liters
• Includes: 4 L Dirty Collection Reservoir and 4 L Clean water Reservoir, Gravityworks Filter Cartridge, and hoses
• Size: Width 3 in / 8 cm
• Weight: 10.75 oz