Filterpure sediment filters are designed to remove fine particles from water. Pleated filters are used for larger particle sediment removal.
Also available are Polyspun filters that are often used as a secondary filter for finer sediment removal.
Davey recommends using 20 micron and 1 micron filters together in series for maximum cartridge life and for effective reduction of cysts such as Cryptosporidium and Giardia.