... water-making, softening, hard water, wet purification for gold, rare element separating Exchanges some heavy 1) Plastic: PP, AS 2) Filter ... gold,rare element separating e) Exchanges some heavy metal ion in water, such as magnesium, and calcium, carbonate 4) Capacity ... 1.75L5) Capacity of filter cartridge: 150L/2 months3070pcs/6312pcs/7392pcscapacity:2.5Ltotal output:>150Loutput rate:>4L/h water pitcher