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BERKFIELD IMPERIAL, 5 GALLON CAPACITY

Imperial Berkey™ 6-filter system. Stainless steel water filter.
Six 9" Imperial Super Sterasyl filter elements. Imperial filter elements have up to 85% more capacity and life than the standard 7" filter elements.

The British Berkefeld® Water Filtration Systems... are the ultimate in water filtration used world-wide. To provide virtually the most delicious, sparkling clean water possible in situations where a potable water supply may not be available.

The Berkey has become the standard by which all other water filtration systems are measured. You deserve the freshest, cleanest water possible from the world's most flexible, convenient and superior water filtration system.

The Berkey's unique design combines the age-old process of micro-porous filtration used by nature coupled with modern state-of-the-art technology and the highest quality materials to bring you virtually the finest water filtration system available anywhere.

To use, the upper chamber of the unit is filled with water. Gravity draws this water through the exclusive British Berkefeld® ceramic filters, where it then collects in the lower chamber.

The two piece housing is portable and can be used virtually anywhere, anytime. An easy to turn On-Off spigot is used as the outflow tap.

The "Super Sterasyl"filters reduce up to 99.99% of particulates, cysts, parasites and pathogenic bacteria including E. Coli, Cryptosporidium, Giardia and Salmonella Typhi. Additionally, these filters will reduce chlorine, rust, sediment and organic chemicals. With filtration rating efficiencies of >98% down to 0.2 microns >99.9% at 0.5 microns >99.99% at 0.9 microns (Spectrum Labs).

Takes minutes to assemble and can provide many gallons of good-tasting, sparkling, wholesome drinking water each day. Constructed of high grade, polished stainless steel making it hygienic, durable and easy to clean.

The Berkey filters are powerful and econical. The unique ceramic filters are impregnated with pure silver, rendering them self-sterilizing. What's more, the durable ceramic filters can be cleaned over and over, as needed, with a soft brush or ScotchBrite pad.


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 10000C. 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.

Maximum working pressure 125 psig Maximum working temperature 1000 F Minimum working temperature 400 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

Other 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

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