UltraCarb OBE Sterasyl ceramic outer shell carbon block core with ATS resinPathogenic bacteria: Cholera, Typhoid, Salmonella, Serratia, E. Coli, Fecal Coliform >99.99% removalCysts: Cryptosporidium Parvum, Giardia Lamblia >99.99% removalSediment: Down to 0.9 micron absolute; 0.5 - 0.8 micron with a filtration efficiency of >99.99%Organic Chemicals: Pesticides, herbicides and organic solvents removalMetals: Lead, Iron, Aluminum removalTaste & Color: Hydrogen Sulphide, Iron, etc. removalLead Removal: Lead is seldom found naturally in domestic water supply but can result from the dissolution of lead pipes which may still be in use in old water systems. The zeolite metal ion reduction medium in the Ultracarb element effectively reduces the lead content in drinking water. Specifications All the features of the Sterasyl and SuperCarb plus:Activated carbon block with ATS resinDesigned to be used in pressure filtersNot for gravity filter useLead reduction >98.3% (NSF 53)Chlorine reduction >97% (NSF 42)Organics reduction >85%