British Berkefeld® 8.5 Ltr Standard - Doulton® 7" Super Sterasyl® Ceramic

From an historical perspective since 1827, gravity water filtration was birthed with Doulton® and British Berkefeld® to the benefit of millions, even today continuing to serve in over 150 countries.

The Doulton® and British Berkefeld® gravity systems offer an effective solution for the need in today's world to filter drinking water, coupled with the benefits of contact time with the filtration media. Doulton® and British Berkefeld® heritage and commitment to water filtration is built on years of innovation and the highest international standards to ensure a quality product, every time.

Manufactured from the best food grade 304 Stainless Steel in the UK, the 8.5 Ltr bottom chamber offers to serve a family 1 - 4 persons.

Fully assembled the unit stands 480mm high with a base diameter of 215mm

For storage and travelling purposes, the top chamber nests inside the bottom chamber to a height of 330mm

What comes standard in the box?



Standard British Berkefeld® System includes;



2 x Doulton® 7" Super Sterasyl® Ceramic Filters
1 x Upper and 1 x Lower 304 stainless steel chambers
1 x 304 Stainless steel lid and knob
1 x Spigot
1 x Rubber gasket to protect the base
2 x Wingnuts (To fasten the 7" Super Sterasyl® Ceramic Filters in place)
2 x Washers (To seal the 7" Super Sterasyl® Ceramic Filters in upper chamber)

Performance benefits

  • Highly effective barrier to filter particles and pathogens for maximum protection
  • Long life and long-term value, easy to clean and replace filters ensuring a 6-12 month quality lifespan
  • 100% natural ceramic materials and activated carbon
  • Healthy mineral preservation during the filtration process
  • Anti-bacterial properties inhibit microbiological growth within the ceramic element
  • Multi-stage filtration combines features to help target chlorine and bacteria
  • Affordability with no power required to install and long-term efficient performance achieved
  • Environmentally friendly processes to reduce carbon footprint and waste reduction of plastic bottles
  • Versatility of portable indoor or outdoor gravity-fed systems, the choice is yours

To assure consistent quality and maintain rigid standards, Doulton® ceramic water filtration systems are backed by stringent in-house quality control procedures. Accredited by BS EN ISO 9001 international quality standards, we also hold the coveted NSF® and WRAS certification.

Doulton® 7" Super Sterasyl® Ceramic Filters

Part Number: W9121200

Thread Range: 1/4" BSP Long ( 1 ½" / 38mm) Threaded Mount

Length: 7 inches (177mm)

Diameter: 2 inches (49mm)

Filter Performance: Micro filtration of Bacteria, Cysts, Particles, Chlorine and Organics

3-Stage filtration process within the 1 cartridge

Stage 1 - Doulton Sterasyl Ceramic
This stage filters fine particulate matter, bacteria, cysts and turbidity.
Stage 2 The incorporation of silver locked within the ceramic structure gives enhanced bacteriostatic and self sterilising properties.
Stage 3 - (GAC) Granular Activated Carbon
Granular activated carbon takes out chlorine and organics improving taste and odour


Supersterasyl membrane: Used for microbiological removal. The only ceramic element in the world to meet the stringent NSF antimony and arsenic extraction test featuring:

  • >99.99% E.coli removal
  • Tested with live Cryptosporidium cyst to 100% removal far exceeding EPA three log cyst reduction requirements
  • 100% efficiency at 0.9 µm absolute (0.5 µm absolute ANSI standard)
  • > 98% efficiency at 0.2 µm
  • > 90% efficiency at 0.05 µm
  • < 0.07 NTU turbidity reduction

( µm = micron )

Recommended change frequency        2000 Ltrs / 12 months

Flow Rate                                                 1.1 Ltrs hour per candle

Pathogenic Organisms

% Bacteria Removal                                  99.99%
                                                                   Coli / Cholera / Shigella / Typhoid / Klebsiella Terrigena
% Cyst Removal                                        99.99%
                                                                   Cryptosporidium / Giardia
Free Chlorine Removal                               95.00%

Super Sterasyl® Lab Test Results





Due to the well known and trusted name of Doulton® Super Sterasyl® Ceramic Filters, there are unauthentic candles for sale on the market today, to overcome this problem and assure you that your products purchased on this website are the authentic Doulton®, candles and can be registered with the serial inscribed on the underside of the candle as seen in the product pictures above. Doulton® implemented this strategy to ensure the quality you have paid for. Please click here to register your Doulton® product, registered at the authentication centre.