Doulton Sovereign Ceramic Drinking Water Filter Cartridge
SUSPENDED FROM PURCHASE - Re-engineering in progress
Double Sovereign Super Sterasyl Ceramic Doulton Water Filter Cartridges

This is actually two (2) SOV300 Doulton Super Sterasyl Ceramics with a special interconnect mount to allow them to be used in a 20in BWH-20 Big White Water Filter Housing. This effectively doubles the volume of water that can be processed.

Doulton Sovereign ceramic drinking water filter cartridges are now available in a range of standard water filter cartridge formats which bring the quality associated with the Doulton name to the general water filtration market.

Doulton Super Sterasyl is a highly efficient high flow ceramic micro filter which provides genuine sub micron drinking water filtration. The ceramic is manufactured with the highest consistent and controlled pore structure necessary to remove a wide range of water borne contaminants over the life of the cartridge. The incorporation of silver locked within the ceramic structure inhibits the growth of bacteria and gives each cartridge enhanced bacteriostatic and self sterilizing properties. Super Sterasyl cartridges are filled with granular carbon for the reduction of chemical contaminants, chlorine, VOCs plus taste and odor control.

Sovereign Super Sterasyl Ceramic Doulton Water Filter Cartridge

Application Guide and Contaminant Removal Chart

P= Purification R= Reduction> 95% F= Effective Filtration>90%

Contaminants Removal General Description
Bacteria P Application: These cartridges are designed for homes fed by well, surface or Chlorinated Municipal water. These cartridges are also effective for homes which are fed by asbestos concrete reinforced water supply mains in their city.

These cartridges provide outstanding rejection of bacteria, cysts and effective depth filtration of particulate >.5 micron. They are easily cleaned by simple brushing with a ScotchBrite pad (or equivalent). The capacity ratings are to ensure that the internal granular carbon remains effective under the worst possible contaminant conditions.


Though not reaching purification standards, these cartridges produce outstanding rejection of Chlorine (>97%) at their rated life.

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Cysts P
Taste F
Odors F
Colour F
Chlorine R
Herbicides R
Pesticides R
Lead NA
Metals NA
Fluoride NA
Nitrates NA
Arsenic NA

Filtration Efficiency Chart

Efficiency Rating General Description
Absolute filtration rating Defined as >99.999% 0.9 micron Dimensions:

Sovereign: 41/2" diameter, 93/4"


Fits BWH-20 filter housings along with most 10" standard filter housings from a variety of other manufactures.
For 10in applications see SOV300

Nominal or Effective filtration rating 99.9% 0.5-0.8 micron
99.7% 0.3-0.5m
98.0% 0.2-0.3m
% Bacteria removal E. coli >99.99%
Vibrio Cholera >99.99%
Shigella >99.999%
Salmonella Typhii >99.999%
Klebsiella Terrigena >99.999%
% live Cyst removal Cryptosporidium 100%
Giardia 100%
Flow rate Flow rating in litres/hr from 10-80 psi.
For a full page view click on the chart itself.
Technical Specifications
Working Temperature Range 5 - 38 C
Working pH range 5.5 - 9.5
Minimum Working Pressure 10 psi.
Maximum Working Pressure 125 psi.


Cartridge Diamensions

To learn more about Drinking Water Filtration take some time to explore our vast website
via the links at the bottom of this page.

To view the complete line of Doulton drinking water filter systems, see our on-line Product Catalog.

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