Ceramic Cartridge - Cleanable.
Used to prevent any cysts, parasites, etc (Eg - cryptosporidium, giardia, etc) from entering your drinking water.
Life of cartridge is - cleanable for approximately 60,000 litres max. (Dependant entirely upon the quality of the supply water).
Please note: This cartridge is for 'domestic style' systems that fit 9 & 3/4" sized replacement cartridge. Does not fit the B.E.S.T. Inline models.