The only personal In-Line Water filtration system that cleans: Aesthetic-offensive tastes, odor, chlorine, silt, sand, and sediment. Micro Biologic pathogens, such as Cryptosporidium, Glardia, and other Cysts and spores. Chemical Industrial VOC's (Volatile Organic Compounds), PCB's (Polychlorinated Biphenyls), THM's (Trihalomethanes), Agricultural SOC's (Synthetic Organic Compounds), detergents, pesticides, DDT, etc. Dissolved solids - hevy metals...aluminum, asbetos, cadmium, chromium, copper, lead mercury, and more plus Radon 222. About the filtration capabilities: The heart of our portable filtration products is our new technologically advanced porousplastic microfilter. This breakthrough technology is the result of the research of aerospace scientist, medical researchers, and water purification specialists with over 30 yrs. of product development experience. BlackHawk Industries/HydraStorm now offers Ionic-Absorption Micro-Filtration through this system of thousands of interconnected omni-directional pores. The "torturous path" structure of these pores gives it a unique characteristic that cannot be duplicated by any other porous. This product offers, through medical technology, a uniform 2-micron pore size for the assured reduction and removal of the a,b,c and d's of contamination. Under Seychelle's exclusive process, the filter is then impregnated with the finest granulated activated coconut carbon available, and our proprietary sorben medias. Seychelle's exclusive Ionic Absorption Micro-Filtration coordinates all processes of contaminant use two types of Granulated Activated Coconut carbon to achieve the greatest effect of reduction and high quality taste. The system is tested by only the highest quality, state approved laboratories certified to test under the strictest EPA, ANSI, and NSF standard methods and protocol. The gallon volume of filtration is tested to NSF standards 42 and 53. Kit includes black in-line carrier, filter, and flush bulb. You need to flush your new filter with 8-16 oz. of water to clean out any manufacuring residue prior to use.