... and rust 3)Filter precision:1,5,10,20micron PP Sediment Filter Cartridge with 5 micron 1.Brief account:New generation spun ... ratings at specified micron rating(3)Normal Filtration ratings:1, 5, 10, 20 and 50 micron(4)Resistance to ... -7/82-1/21, 5, 20, 50200.2-0.49-5/82-1/21, 5, 20, 50200.2-0.419-1/22-1/21, 5, 20, ... 50300.2-0.4202-1/21, 5, 20, ...