Applies to pure water-making, softening, hard water, wet purification for gold, rare element separating Exchanges some heavy ... for gold,rare element separating e) Exchanges some heavy metal ion in water, such as magnesium, and calcium, carbonate 4) Capacity of ... months3070pcs/6312pcs/7392pcscapacity:2.5Ltotal output:>150Loutput rate:>4L/h water pitcher