Description: 1.The body of the purifier is made of high-quality stainless steel. 2.One litre of water is filtered within 30 sec. 3.The water purifying qualities have been tested in laboratory. 4.The filter contains activated carbon and valuable, ultra-fine, ultrathine 99.995 % refined silver powder (very expensive material). 5. The purifying capacity without changing the filter cartridge is ca. 10000 litres of water. You can easily clean the cartridge yourself for ca. 20 times. That means with 120 l / hours filter, clean hight quality water costs is around: 0.020 / litre. With 10 l / hours filter: 0.012 / litre ( only one cent / litre ! ). This filter is suitable for purifying tap water at home. In field conditions you can drink any water, for example, contaminated river or lake water, muddy water from puddles etc. The dirty water in the photographs was taken from a puddle in a road, driven over by thousands of cars and walked over by hundreds of pedestrians. There was oil and bacteria, and yet it became completely clean (without using Aquatabs) as I filtered it twice through the purifier, and I drank it all myself. Disinfection tablets Aquatabs (which contain chlorine) are necessary only if water is completely filled with bacteria (e.g. contains much excrements), i.e. fully contaminated. Example if in the water floating so meny animal or human decay bodies (so much bacteria). The filter also takes out the taste of chlorine. If Aquatabs will be used, take water first in a separate container, treat it with Aquatabs, and after that clean it with this filter. Aquatabs coming with filter (free). Note that the filter doesn't remove salts, so it cannot be used for purifying salty seawater. The filter also take out radioactive from water