This First Need Deluxe water filter replacement cartridge has a 0.1 micron carbon matrix filter element which pumps out a rapid 1.8 liters per minute. Good for about 135 gallons. The First Need filter by General Ecology has the finest filter among the water purifiers and it also offers the fastest pump rate.
The First Need easily surpasses the competition because it is the only water "purifier" certified to federal standards that requires NO chemicals to remove all three types of waterborne contaminants:
cysts (like Giardia and Cryptosporidia) bacteria viruses The First Need also accomplishes its purification with a single pass through and no guessing about additional settling times. It's the quality portable system chosen and depended upon by the military and professional outdoors people who demand the very best. General Ecology's First Need system removes cysts, bacteria, viruses and viral toxins in a single pass.
Effective against cryptosporidia, bacteria, and viruses unmatched in removing harmful chemicals Direct Connect to Nalgene bottles Sanitary cover to protect outlet Longer tubing Rugged comfortable handle Greater capacity and fastest flow of all Self-cleaning prefilter and gravity assist system. No iodine needed!