Reverse osmosis membrane TFC-100 F 15 l/h Aqua Filter's TFC-100 reverse osmosis membrane removes with a permeability of 0.0001 micron from water, the contaminants that may be present, such as lead, arsenic, barium, chromium, mercury, sodium , cadmium, fluoride, nitrite, nitrate and selenium. TFC replacement membranes have been tested and certified according to the requirements of the International Organization NSF and Water Quality Association. They have been deemed suitable for domestic drinking water filtration systems. They have been certified according to NSF/ANSI Standard 58.