Ceramic water filters work by simply allowing the water to seep through tens of millions of pores in the water cartridge surface.  In the process, organic and inorganic particulates too large to pass through (often anything larger than 0.5 micron) accumulate on the ceramic surface.   As a point of reference, even cysts (like Cryptosporidium and Giardia) are too big in size to squeeze through the tiny pores of the ceramic filter cartridge.  Chlorine Reduction Long-life and cleanable(Scrub the filter under running water with the FREE Mesh Net Sandpaper!) • 100% Brand New • Ready Stock • Reduces Harmful Bacteria = > 99.9% • Removes Rust, Sediment & Suspended Solids = >99.9% • Absolute Filtration (To 0.9 Micron) = 99.99% • Nominal Filtration ( To 0.80-0.30 Micron ) =99.9% • Turbidity Reduction = >99.9% • With built-in CARBON BLOCK • REMOVES Chlorine, chemical, dust and bacteria • 100% Genuine MADE IN Malaysia • JAKIM Halal Cert NOTE: Black articles may be seen in the water which is run to waste. This is normal and will clear as the water runs. Place ceramic filter in an appropriate housing and flush for a minimum of 10 minutes prior to use. If the ceramic filter is unused for more than 3 days then it is recommended that water be run to waste for 1 minute before using. If cleaning fails to restore adequate flow of water and cracks being found. Replace a brand new ceramic filter. ** order received after 1pm will process the next day (or the next business day on Saturday, Sunday & Public Holiday) Thank you.