A Division of Arctic Refrigeration and Merchandise Inc.

411 W. 6th. St. Pueblo, Colorado. 81003 719-545-1800 Order line 1-800-360-2660

Email: water@arctic-1.com 

British Berkefeld Water Filters Elements
Sterasyl Ceramic Water Filter Element


The Sterasyl 

grade ceramic is designed to remove suspended solids
and pathogenic bacteria.

Composition of the Sterasyl ceramic contains pure silver. This silver is
a specially formulated self-sterilizing (bacteriostatic) agent. The result is
that bacterial growth is prevented from occurring within the Sterasyl
ceramic element (which is possible with the other ceramic filter
elements.) More importantly, bacterial “grow-through” is eliminated.
This silver content is about 0.07%, which is well within the allowable
levels recommended by the World Health Organization and the E.P.A.
Because of the silver, Sterasyl filter elements do not require
sterilization after cleaning.

The Sterasyl ceramic is the ceramic used for the Super Sterasyl filter
element. Accordingly, this filter element will have, at a minimum, the
filtration benefits of Sterasyl.

The Sterasyl filter, when used in a Doulton HIP in-line housing (Model
Designations: HIP/Sterasyl), is certified by the National Sanitation
Foundation (NSF) as meeting their Standard No 53 (health) criteria.
Standard No 42 pertains to self-sterilizing (bacteriostatic) effects and
particulate reduction. Standard No 53 pertains to cyst and turbidity
reduction.

Super Sterasyl 

Candle Water Filter Element
This cleanable filter element is designed to reduce suspended solids,
pathogenic bacteria, organic chemicals, and improve taste and odor.
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
removal of chlorine, reduces organic chemicals and improves the
color, taste, and odor of the source water. The Sterasyl element has a
unique domed ceiling assuring that leakage cannot occur as may
happen with capped filters.

The Doulton Ultracarb 

is a three 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. 
First Stage The first stage consists of Doulton
Sterasyl ceramic which provides genuine sub
micron filtration. The cartridge reduces fine
particulate matter, bacteria, cysts and turbidity. 
The incorporation of silver locked within the
ceramic structure gives enhanced bacteriostatic
and self sterilizing properties. 
Second Stage An inner core of activated carbon
block removes chlorine and organic compounds. 
Third Stage Ion exchange resin reduces Lead
and other heavy metals.

Bacteriostatic Effect


The Doulton ceramic filter is designed to trap bacteria mainly on the
outer surface of the ceramic element preventing them from passing
through into the drinking water.

Given favorable temperature and pressure conditions, the accumulated
bacteria could proliferate and grow unless prevented by some means.
To prevent this our elements (Super Sterasyl) are manufactured with a
small amount (about 0.07%) of silver in the ceramic shell. Silver is a
recognized bactericide, so when the bacteria comes into contact with
the silver impregnated ceramic, their growth is inhibited. This
self-sterilizing effect is known as the Bacteriostatic Effect.

The silver leach rate from the ceramic is very low and always well
below the national recommended limits.

Maximum working pressure 125 psig 
Maximum working temperature 100 F 


Contaminant Reduction and Removal
Pathogenic bacteria
Cholera, Typhoid, Salmonella, Serratia, E.Coli, Fecal Coliform
> 99.99% removal

Cysts
Cryptosporidium Parvum and Giardia Lamblia - 100% removal
(based on tests by Arizona State University)

Sediment
Down to 0.9 micron, 100%; 0.5 - 0.8 micron with a filter
efficiency of > 99.99% (based on tests by Spectrum Laboratories,
Minneapolis, MN)

Organic Chemicals
Pesticides, herbicides, organic solvents, trihalomethanes

Chemicals
Chlorine

Bacterial mitosis and “grow-through”
Mitosis is the name for the usual method of bacterial cell division. This
division is characterized by resolving the chromatin of the cell nucleus
into a threadlike form that condenses into chromosomes, each of
which separates longitudinally into two parts, one part of each
chromosome being retained in each of the two new daughter cells.

When conditions of growth (cell division) are right (proper
environmental conditions , temperature, pressure, etc.) and sufficient
nutrients, the “threadlike forms” can penetrate the ceramic structure of
other ceramic shells and create bacterial cells on the inside of the
element.

Sterasyl grade filter elements incorporate pure silver into the porous
ceramic shell to prevent “grow-through” from occurring.