****Fits most standard 10" RO & RO/DI Systems including KENT, CoraLife, Seachem, AquaFx, Vertex, SpectraPure.****Matrikx +PB1 Carbon Block Filter 0.5 micron, RO Reverse Osmosis 10" Cartridge. * 0.5 Micron, Nominal Filtration * Heavy Metal Reduction * Lead Reduction * Cyst & Guardia Reduction * Turbidity Reduction * Outstanding Chlorine Taste & Odor Reduction * High absorptive capacity and efficiency * Efficient Sediment Filter * No release of carbon fines