... particulate and rust 3)Filter precision:1,5,10,20,30micron 20" PP Sediment Filter Cartridges 1.Brief account:New generation ... rating(3)Normal Filtration ratings:1, 5, 10, 20 and 50 micron(4)Resistance to bacteria growth(5)Working ... 2)Diameter:2-1/2"(3)Filtration:1, 5, 20, 50Micron(4)Flow rate:20L/Min(5)Pressure drop: ... ratePressure dropInchInchMicronL/MinBar9-3/42-1/21, 5, 20, 50200.2-0.49-7/82-1/21, 5 ...