The Sterasyl® ceramic is fitted with an activated carbon block insert to produce the Supercarb® filter element. Among other things, activated carbon is very effective at removing chlorine and organics from water. Supercarb® is designed to be used in pressure filters (on a mains water supply), not in gravity filters.
Supercarb® has all the benefits of Sterasyl® (removal of particles, pathogenic bacteria, cysts etc.) with additional chlorine and organics removal capabilities.