Nephros has a patented Dual Stage Ultra filter that helps fight waterborne contaminants as well as other harmful contaminants that find their way into our water. There are 2 redundant steps in the dual filtration process. Each stage removes virtually all the contaminants. Although, if one were to fail, the other acts as a backup ensuring the safety and integrity of the filter. Nephros dual filter is the only point of use filter where you can visually verify the performance of the product.

http://www.biologicalwaterfilters.com

Biological Water Filters are a safe, simple and reliable water filtration system that removes waterborne bacteria, viruses, fungi and cysts from tap water. In today's world it is not as simple as just looking at the water before you drink even for natural spring water. Further steps are needed to determine the type of treatment your water needs.

Biological Water Filters can be used anywhere from your home all the way to health care facilities and hospitals. Nephrons patented 0.005 micron dual filters are the safest filters on the market today. They deliver one off efficient point of use filtration for contaminant free drinking and bathing water.