MAUNAWAI Nitrate Protection Replacement Cartridge for the PiTec Under-Sink SystemEffective protection against nitrate and contaminantsThe nitrate protection filter serves as an additional pre-filter and reduces nitrate and other contaminants—in a natural and straightforward way.Your benefits at a glanceReduces nitrate, contaminants, and odorsIdeal for MAUNAWAI PiTec under-sink systemsNatural fi...