New Wave Enviro Barrier Arsenic Reduction Cartridge 96% reduction of Arsenic (As(V)) per NSF Anti Arsenic cartridge filters 80 gallons; Filter change half as often as any other brand Fits any Barrier pitcher: Eco, Premia, Grand, Twist, or Smart 98.8% reduction of Aesthetic Chlorine per NSF Cadmium, copper and mercury reduction per NSF