replacementwater filter cartridge: 1)Moq: 2000pcs 2)Packing: bubble bag+color box+marster carton, 50pcs/carton 3Diameter: 53mm(including plastic part), length: 10 inches (or as per your requirement) 4)Flow rate: 280-380L/H 5)Material: diatomaceous earth 6)packing: Inner packing: 1pc/box, Outer packing: 25pcs/ctn 7)Payment Terms: L/C, T/T, D/P 8)Delivery Lead Time:15 days 9)Price Terms: FOB,CIF 10) Testing report: ZheJiang Provincial Center for Disease Control and Provention 11)How to wash: Use a piece of sandpaper to brush the surface, till the surface is white again12) Frequency of washing: Usually every month(depends on the water quality) 12) Function: Remove dust, rust, cyst, cryptosporidium, guardian, particle and sediment contaminants. Remove harmful bacteria such as E.Coli, fecal coli form, salmonella, streptococcus. 13)The ceramic filtercan be silver impregnated and added with carbon granular.