The Little Luxury Platinum Complete Replacement Filter Cartridge provides crystal clear, healthy, filtered drinking water for up to a year*. Removes up to 99% of harmful contaminants. Our water filter incorporates advanced technology that extrudes NSF 42&53 Certified filtration ingredients and coconut carbon into a 0.5-micron block filter. Wrapped with a PP layer, the composite filter can effectively remove harmful contaminates from water while keeping beneficial minerals.