Made with machine packed Apex 4-8 virgin activated carbon, Phresh carbon filters offer maximum carbon density and optimal air flow.

Phresh’s on-site carbon analysis laboratory is used to independently batch test, de-dust and hand pick carbon. The exact particle sizes required for the best air flow are selected. Any carbon that is too small, too dusty or does not meet stringent airstream tests (minimum 20% butane absorption) is discarded. Phresh only buys the premium 20% of any carbon produced!