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Home > Water Filter Brands > Doulton Water Filters > DOULTON-W9121200

Doulton W9121200 7" Super Sterasyl Ceramic Filter Candle

Doulton Super Sterasyl  W9121200 Ceramic Filter Candle
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Product Code: DOULTON-W9121200
Product cannot ship to California, Iowa, Massachusetts, or Wisconsin
Retail Price: $35.18
  • Doulton W9121200 7" Super Sterasyl Ceramic Filter Candle:
  • The Doulton W9121200 Super Sterasyl Candle Filter features a Sterasyl ceramic outer shell with a GAC core.
  • Candles have a domed end and a plastic mount on the top to fix them into the filter housing.
  • W9121200 cleanable filter elements are designed to reduce suspended solids, pathogenic bacteria, organic chemicals, and improve taste and odor.
  • At the heart of every Doulton ceramic filter is the “Sterasyl” silver impregnated ceramic microfilter.
  • The Doulton W9121200 features silver locked within the ceramic structure which inhibits the growth of bacteria and gives the ceramics self-sterilizing properties.
  • Doulton ceramics do not remove the beneficial minerals from the water, ensuring the filtered water is enjoyable to drink and yet safe from harmful impurities.
  • The Doulton Super Sterasyl Ceramic Filter Candle is a self-sterilizing filter with submicron filtration at an economical cost!
  • The Doulton Super Sterasyl W9121200 is a three stage cartridge combining the highly efficient properties of ceramic with the enhanced water treatment properties of activated carbon.
  • The W9121200 has three filtration stages within a single candle and is fitted with a threaded plastic cap on one end. The first stage reduces fine particulate matter, bacteria, cysts and turbidity. The second stage inhibits the growth of bacteria and gives enhanced bacteriostatic and self sterilizing properties. The third stage removes chlorine, VOC's and industrial solvents.
  • The Doulton W9121200 7" Super Sterasyl Ceramic Filter Candle features a 1 1/4” (L) thread mount for gravity filter use.
  • First stage: The first stage consists of Doulton supercarb ceramic which provides genuine sub-micron filtration. The cartridge reduces fine particulate matter, bacteria, cysts and turbidity.
  • Second stage: The incorporation of silver locked within the ceramic structure gives enhanced bacteriostatic and self sterilizing properties, preventing the growth of bacteria.
  • Third stage: An inner core of activated carbon block removes chlorine and organic compounds.
  • Doulton W9121200 7" Super Sterasyl Ceramic Filter Candle Contaminant Reduction:
  • Pathogenic bacteria: Cholera, Typhoid, Salmonella, Serratia, E. Coli, Fecal Coliform >99.99% removal
  • Cysts: Cryptosporidium Parvum, Giardia Lamblia >99.99% removal
  • Sediment: Down to 0.9 micron absolute; 0.5 - 0.8 micron with a filtration efficiency of >99.99%
  • Organic Chemicals: Pesticides, herbicides and organic solvents removal
  • Metals: Iron, Aluminum removal
  • Taste & Color: Hydrogen Sulphide, Iron, etc. removal
Doulton Super Sterasyl Ceramic Water Filter Performance
(Fully Supported By proven test data)
Filtration Rating
(% particulate filtration efficiency)
Absolute (defined as >.99.99%) 0.9 micron
Nominal (defined as >99.9%)
0.5 to 0.8 micron
% Bacteria Removal
E. Coli, Vibrio Cholerae (Cholera), Shigella, Salamonella Typhi (Typhoid), Klebsiella Terrigena
% Cyst Removal
Giardia >99.99%
Inorganics Removal Free Chlorine Removal
2mg cl/l challenge
Quality Approval Turbidity Reduction
To NSF Standard 53
Capacity Before replacement to guarantee performance Gallons 568
Flow Rate 3 bar pressure 1.2 gal/minute
For Maximum Performance .4 gal/minute
In Gravity Fed Filter Unit- Per candle installed 5 gal/24 hours
Working Temperature Range
41-107° F
Working Pressure Range
10-100 ps
  • Doulton W9121200 Super Sterasyl Ceramic Filter Candle Specs:
  • Dimensions: 7" long X 2" Diameter - 1 3/4" (long) thread mount
  • Micron Rating: .9 µm Absolute
  • Maximum working temperature: 100° F
  • Minimum working temperature: 40° F
  • Capacity: 600 Gallons
  • Filter Media: Granular Activated Carbon
  • Maximum working pressure: 125 psig
  • Recommended flow rate: 0.3 - 0.5 gpm
  • Recommended cleaning frequency: when flow rate is noticeably lower
  • Recommended change frequency: 6 months or 600 gallons
  • Manufacturer: Doulton W9121200
  • Doulton W9121200 Super Sterasyl Ceramic Filter Candle:
  • The Super Sterasyl Candle is designed for gravity systems.
  • Common Replacement Filter For the Doulton SS-4, Big Berkey/British Berkefeld Gravity Fed Unit
  • The Doulton 7" Super Sterasyl Ceramic Filter Candle W9121200 features 1/4" Threads and fits Doulton Gravity Fed Systems GSS2, GSS3, and GSS4 as well as some HCP and HIP models that require 2" x 7" filter candles.
  • Doulton W9121200 Super Sterasyl Ceramic Filter Candle Maintenance:
  • The ceramic shell of the water filter is designed to filter fine particles, bacteria and other contaminants from your water. In doing so, the outside of the ceramic shell can eventually need cleaning which will become evident when water flow from the filter becomes reduced. When this occurs, simply remove, clean and replace the cartridge as follows:
  • 1st: Wash your hands with filtered water.
  • 2nd: Remove the ceramic cartridge according to the instructions of your particular filter housing (Handle with care. Wet cartridges are fragile!)
  • 3rd: Take a clean scouring pad, or slightly abrasive cloth, and give the ceramic a light scrub under running water. Apply gentle pressure uniformly, take care that the cleaning of the ceramic is not concentrated in one area. This will remove surface particles from the water filter as well as an outer layer of ceramic, restoring and refreshing the water filter to it's original water flow.
  • 4th: Replace cartridge in filter housing.
  • 5th: Wash hands thoroughly after handling the ceramic cartridge.
  • Important: Care must be taken at all times to prevent contamination of the end of the cartridge mount from unfiltered water and/or dirty hands from cleaning the cartridge surface. You may wish to cover the end with a plastic bag and rubberband to make handling easier. Do not use soap or detergents.
  • Cleaning can be done over 50 times before replacement of the water filter cartridge will be necessary.
  • The carbon core, more than likely, will become exhausted before the outer ceramic layer begins to thin, unless you are filtering sediment heavy water, and cleaning is done often.

Quantity Unit Price
1 - 2 $33.99
3 - 5 $32.79
6+ $31.69
Availability: In-Stock
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