Platypus - GravityWorks™ 4L Gravity Filter System

• No pumping: Just fill the dirty reservoir, hang it, and let gravity do the hard work—yep, filtering water can be as easy as fill, hang, relax.
• Fast: Filters up to 1.75 liters per minute; microfilter lifetime up to 1,500 liters of water.
• Effective: Every microfilter is individually tested to ensure it meets all EPA & NSF guidelines for the removal of 99.9999% of bacteria and 99.9% of protozoa*.
• Light & Compact: System weighs 11.5 oz. (326 g) and stows smaller than most 1L bottles.

• Group-ready: 8 L (4.0L filtered + 4.0L unfiltered) total capacity easily supplies water for groups.
• Field-cleanable: Microfilter can be easily backflushed in 4 seconds to maintain filter performance.
• Hollow Fiber Advantage: Hundreds of tiny, hollow fibers enable the microfilter to filter water faster than traditional filter media.
• Easy collecting & dispensing: Collecting water is easy—simply open the top, scoop water, and close; control delivery of filtered water with hose shutoff clamp.

Comes with: Clean reservoir (4.0L), Dirty reservoir (4.0L), Hollow Fiber microfilter, hoses, shutoff clamp, and storage sack.

*This includes Giardia, Cryptosporidium, E. coli, Salmonella and Cholera.

Specs:

• Weight: 330g 
• Filter media: Hollow Fiber
• Filter pore size (microns): 0.2
• Flow (L/min): 1.75 liters per min
• Cartridge life: 1,500 liters
• Dimensions: 18 x 24cm
  
• Effective against:
  
  • Bacteria: Yes
  • Particulate: Yes
  • Protozoa: Yes
  • Viruses: No