NOTE: Filters and Parts available now
Super Sterasyl Ceramic Filters (Candles) – 7 inch


Super Sterasyl Ceramic Filters (Candles) – 7 inch


Price per one

2 in stock

Super Sterasyl Ceramic Filters (Candles) – 7 inch

(Shortest filter As shown at far left in photo)

With a history dating back to the earlier 1800s, Super Sterasyl ceramic filters (candles) have been used by such noted groups as the British Royal Household, Red Cross Societies, Missionaries, Peace Corp and UNICEF.  The filter elements or candles are designed for gravity-based water filter systems, especially Berkey and British Berkefeld systems,to reduce suspended solids, pathogenic bacteria, organic chemicals, and improve taste and odour.

Size: 7 inch (17.8 cm) – larger sizes available.  The larger the size, the faster the flow rate.
Fits: All British Berkefeld and Berkey systems or similar gravity-based filter systems.
Filter Capacity: Usable for several years depending on source water quality

Includes: Sold as single filters (candles) so you can purchase the precise amount you need.


  • Re-cleanable and self-sterilising
  • Economical and long lasting.  Filters may be reused for several years under normal usage
  • Impregnated with silver which inhibits bacterial grow-through in the filter
  • Made in England (UK)

Filters as follows:

  • removes cysts Cryptosporidium and Giardia by 99.99%
  • removes disease causing bacteria by 99.99%, including Cholera, Typhoid, Salmonella, Serratia, E. Coli, Fecal Coliform
  • reduces herbicides, pesticides, organic solvents, SOCs, VOCs and trihalomethanes
  • reduces chlorine and lead
  • removes bad taste, rust, colour & odours
  • removes silt and sediment making your water crystal clear
  • removes Fluoride and Arsenic WITH addition of PF-4 post-production filters.

To Re-clean:

When the flow rate decreases simply brush the ceramic purification elements with a scrub pad under running water. As the top layer of ceramic with contaminants is brushed off and washed away, a new layer appears.  Then reinstall and your system is ready to purify water again.

When to Replace:

Replace Super Sterasyl ceramic filters when the carbon has been exhausted or if there is a significant change in the ceramic diameter after cleaning. Anytime a crack in the ceramic occurs, the integrity has been lost and the filter must be replaced.


Our ceramic filters have been in continual use since 1827.   Historically, they have been used by the British royal household; relief organizations such as UNICEF, the Peace Corps, missionary organizations and international Red Cross Societies; hunters, campers, adventurers, and explorers; and general populations in over 140 countries worldwide.

John Doulton founded his first pottery in 1815. As early as 1827, his son Henry, developed ceramic filters for removing bacteria from drinking water. Because the Thames river was heavily contaminated with raw sewage, cholera and typhoid epidemics were rampant.

Queen Victoria commissioned Henry to produce a water filter for the Royal household. His Research and Development department created micro porous ceramic cartridges capable of removing bacteria with better than 99% efficiency.  These ceramics are used in British Berkefeld® gravity filters.

Current Super Sterasyl Ceramic Filter Design

The filter elements are produced using the latest ceramic techniques to provide a hollow porous ceramic which is fired at a temperature in excess of 1000C. They are designed to operate with water flow going from the outside to inside of the element. The ceramic shell exhibits a strictly controlled pore structure, so as to provide efficient sub-micron filtration, a proven defense against hard shelled parasites such as Cryptosporidium, as well as removing other less harmful, but equally unpleasant particulate debris, such as rust and dirt. The bore of the filter candle contains granular activated carbon that aids in the reduction of chlorine, reduces organic chemicals and improves the colour, taste, and odour of the source water. The Sterasyl™ element has a unique domed ceiling assuring that leakage cannot occur as may happen with capped filters.

Maximum working pressure 125 psig
Maximum working temperature 38 C
Minimum working temperature 4.4 C

The latest designs of Super Sterasyl™ filter elements incorporate pure silver impregnated into a porous ceramic outer shell [80,000,000 pores] that can trap bacteria down to as low as .22 of a micron in particle size [1/100,000 of an inch (2.54 cm)]. Laboratories consider a filtering medium with an effective pore size of .01 micron to .45 micron to be bacteriologically sterile and .45 micron to 1.0 micron to be bacteriologically safe. Regrowth of bacteria that becomes trapped either on the outside of the element or in the ceramic’s pores is controlled by the silver which, on contact with water, releases small quantities of positively charged metals ions. These ions are taken into the enzyme system of the bacteria’s cell and thereby neutralize it.

WHY Silver?

The entire ceramic wall is impregnated with pure silver because silver has been long proven as a disinfectant which inhibits bacteriological colonization of the ceramic wall.

Super Sterasyl™ Ceramic filters have been tested by:

  • ISO-9000: 2000
  • Hyder Labs® UK
  • Spectrum Labs® UK
  • WRc® Mednenham UK
  • Clare Microbiology® UK
  • Loughborough University – UK
  • University of Arizona® USA
  • Thresh, Beale, and Suckling® UK
  • WRc Gwent® UK

Many Independent Laboratories Worldwide