MAUNAWAI Premium Shungite Pre-Filter Pads – Natural Power for Clear Drinking WaterEffective pre-filtration – naturally reduces limescale, nitrate, and contaminants.Harness the powerful effects of Edelschungit and activated carbon to enhance the performance of your MAUNAWAI Kini water filter pitcher or your PiPrime gravity-fed countertop filter.The pads work even before the main filtration stage...