Replacement cartridge set includes. .5 micron bonded carbon block with molecular sieve Molecular Absorption Discs designed to absorb heavy metals, volatile organic chemicals (VOC’s), dissolved organic matter and phosphates at a 4 gallon per minute flow rate. .2 micron Fim-L-Filter bag to restrict algae, Giardia Cysts, Cryptosporidium, fungus and E. Coli bacteria.