The Grayl Ultralight Purification Bottle is essentially a french press designed to purify unreliable water into clean, safe drinking water.
The filtration element uses electroabsorption, ultra-powdered activated carbon, and silver-treated zeolites to filter out 99.9999% of all viruses, bacteria, and protozoan cysts. It’s also effective at removing particulates like silt, sediment and heavy metals, and it removes most unpleasant chemicals like chlorine and benzene.
The bottle uses BPA free construction, and the replaceable cartridge filter is effective for 300 uses, about 40 gal/150 L of water. The bottle has a capacity of 16 oz (473 ml), and Grayl offer a 10 year warranty on each unit.