... particle retention and superior contaminants holding capacity With longer filtration life.3) No fiber releasing and media migration4) No ... : 10", 20", 30", 40"9)Applicable PH value:1-1310)10)Precision of filtering(micron):1,3,5,10,20 ... ,30,40,50at last, there is a largest ... is loose, which could make water flowing qucikly. micron filter cartridges