Doulton Imperial Ultracarb 10“ filter

Doulton Ultracarb Imperial OBE (248-250mm) drop in filter

The Doulton Imperial W9223022 cartridge is open on both ends (OBE) and fits in standard 10" filter housings. The Doulton W9223006 Imperial UltraCarb OBE Ceramic Filter has all the features of the Sterasyl and SuperCarb plus: Activated carbon block with ATS resin, Lead reduction Chlorine reduction and Organics reduction.
Doulton Ultracarb is a four stage cartridge combining the highly efficient filtration properties of ceramic with the enhanced water treatment properties of activated carbon and the heavy metal reduction capabilities of ion exchange media.

Manufactured recommended change would be 4000 litres or a maximum of 12 months.

The W9222909 Supercarb variant is no longer being manufactured so this Ultracarb variant has superseded it.

First Stage:
The first stage consists of Doulton Ultracarb ceramic which provides genuine sub-micron filtration. The cartridge reduces fine particulate matter, bacteria, cysts and turbidity.

Second Stage:
BioTec Enhanced anti-bacterial properties. Doulton ceramic filter candles have an anti-bacterial matrix integrated into the ceramic mix, making the candle self-sterilising and inhibiting bacterial growth on the filter.

Third Stage:
An inner core of activated carbon block removes chlorine, taste, odour and organic compounds.

Fourth Stage:
Ion exchange resin reduces Lead and other heavy metals.