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Berkey® is a unique patented design that provides for the need of natural water purification in a changed world, while still maintaining the essential minerals provided for us by nature. The Berkey® solution utilises the convenience of position in our busy households and advanced proven technology that is well supported by many independent studies, thousands of online reviews and medical organisation recommendations. We hope also that you will enjoy the Berkey® household name, this quality product packed with many features and benefits has come to be known be for. Berkey® is affordably priced, that translates into long term value that not only looks attractive in your home, but gives the feeling of security for the health conscience minded individual’s, who are mindful of theirs and their family’s well-being. When friends and family visit, it will be a noticeable acknowledgment from them that you are providing Berkey® purified safe water that has established the feeling of trust and visible recognition prior to offering.

To maintain a higher flow rate we have configured this Berkey Earth® system with 4 x 9" elements and 2 sets of 2 PF-4 Fluoride Filters, with the Berkey Earth® Elements being a leader in the filtration class and the independant filtration test results exceeding the NSF 42 and 53 standard. 

What comes standard in the box?

Standard Berkey® System includes;

4 x 9" Berkey Earth® Elements 
1 x Upper and 1 x lower stainless steel chambers
1 x Stainless steel lid
1 x Spigot
1 x Rubber gasket to protect the base
4 x Wingnuts (To fasten Berkey Earth® Elements in place)
4 x Washers (To seal Berkey Earth® Elements in upper chamber)
4 x Blocking plugs (To seal the upper chamber unused ports where extra Berkey Earth® Elements can be installed, expandable up to 6 elements)

Also includes 2 sets of 2 Berkey PF-4™ Fluoride and Arsenic Reduction Elements 

Important !!! If you have a two filter Berkey® System and you used 15 Litres of water per day. You would multiply 2 (#of filters) by 11,000 Litres = 22,000 (Total Life), then divide 22,000 by 15 (total use) = 1460 days the filters will last, That's four years! The Black Berkey® Purification Elements in your unit will never stop working. The real Value is divide the Price by 4 years = the Cost savings on a High Quality Berkey® Product 

  • The Imperial Berkey® System comes standard with two 9″ Berkey Earth® Elements, but can be expanded up to 4 or 6 elements.
  • The versatile Imperial Berkey® System is the ideal system for use with mid to large-sized families, small groups and during unexpected emergencies
  • Constructed of highly polished AISI 304 stainless steel
  • Storage capacity of about 4.5 gallons (17 liters)
  • Upper chamber nests within lower chamber for transport and stands only 17" (430 mm) in height
  • Maximum Filters: 6 Berkey Earth® Elements (in upper chamber)
  • System includes upper and lower stainless steel chambers, two 9” Berkey Earth® Elements (expandable up to 6), 1 stainless steel lid,1 spigot, rubber gasket to protect the base, 2 wingnuts, 2 washers, 1 priming button, and 2 blocking plugs
  • Height when in use: 26″ (660 mm)
  • Diameter: 10″ (254 mm)
  • Weight: 10 lbs (4.5 kg) empty
  • For normal everyday use, this system easily serves: 4-8 people
  • Maximum Filtration Flow Rate: With 4 elements (in an Imperial Berkey® system), the 4 x 9” elements can produce flow rate of up to .5 gallons (1.8 litres) per hour or up to ­­­­­12 gallons (45 Litres) of water in 24 hours as per Berkey knowledge base (Tests conditions were carried out with a continual topping up of the upper chamber always maintaining a constant head pressure to maximise flow and prefiltered water used to prevent premature slowing. Normal filtering of town water can vary depending on water quality conditions. As a note with a water level of 12 inches a head pressure of .434 psi is achieved delivering maximum flow rate conditions, the  Berkey Earth® Filtration Elements deliver outstanding filtration results as per the filter spec tab, the comparison to the Black Berkey® Purification Elements will always prove that Black Berkey® Purification Elements can be up to 8 x faster than all Ceramic Diatomaceous Earth filters on the market today and maintain a significant level of water purification due to it's greater porosity of the solid carbon block via millions of pores as small as 0.1 micron or as the lab tested results have proven to remove contaminants as small as .024 micron equal to 24 nanometers.)
  • Up to 6 Berkey PF-4™ Fluoride and Arsenic Reduction Elements may be installed in the lower chamber of this system if desired

Flow rate calculated with upper chamber full to top. Flow rate decreases as water level declines

  • Berkey Earth® Elements are sold as a single filter element
  • The most powerful gravity-fed element in the Filtration class, backed by independent testing
  • Filtration class: Micro-Filtration Technology. Tested to reduce contaminants to bacterial level
  • Chemicals, herbicides, pesticides, VOC’s, THM’s, heavy metals and more are easily reduced to 99.9%
  • Proprietary formula comprised of Diatomaceous Earth, granulated activated carbon and other media components, designed to exceed filtration standards
  • Each Berkey Earth® Filtration Element will filter up to 3,000 gallons of water or last up to 3 years, before replacement is needed.
  • With 4 elements (in an Imperial Berkey® system), the 4 x 9” elements can produce flow rate of up to .5 gallons (1.8 litres) per hour or up to ­­­­­12 gallons (45 Litres) of water in 24 hours as per Berkey knowledge base (Tests conditions were carried out with a continual topping up of the upper chamber always maintaining a constant head pressure to maximise flow and prefiltered water used to prevent premature slowing. Normal filtering of town water can vary depending on water quality conditions. As a note with a water level of 12 inches a head pressure of .434 psi is achieved delivering maximum flow rate conditions, the  Berkey Earth® Filtration Elements deliver outstanding filtration results as per links below, the comparison to the Black Berkey® Purification Elements will always prove that Black Berkey® Purification Elements can be up to 8 x faster than all Ceramic Diatomaceous Earth filters on the market today and maintain a significant level of water purification due to it's greater porosity of the solid carbon block via millions of pores as small as 0.1 micron or as the lab tested results have proven to remove contaminants as small as .024 micron equal to 24 nanometers.)
  • Ideal for the price-conscious consumer to get started with a highly efficient filter system, at a more affordable price
  • Economical entry price affords those who would like to upgrade to the more powerful Black Berkey® Purification Elements down the road, the ability to get an effective and economical system now and then upgrade later
  • Available in 7” and 9” sizes
  • Compatible with PF-4™ Fluoride and Arsenic Reduction Elements

Click Here For Berkey Earth® Element Independent Lab Test Results

Berkey-Earth-Bacteria-Removal-Test-Report

Berkey-Earth-Heavy-Metal-VOC-Pesticide-Herbicide-Pharmaceutical-Petrol-Removal-Test-Report

Berkey-Earth-Microbiological-Removal-Test-Report

NMCL Berkey Knowledge Base FAQ  

  • The Berkey PF-4™ Fluoride and Arsenic Reduction Filters adsorb the following unwanted elements found in drinking water:
    • Fluoride
    • Arsenic
    • Lead
    • Heavy Metal Ions
    • MTBE (Methyl-tertiary-butyl-ether)
    • Trihalomethanes (THM)
    • DBCP (Dibromo-chloro-propane)
    • Herbicides and Pesticides
  • Made from safe, non-leaching polypropylene #5 that is BPA-free
  • Sold in a set of 2
  • PF-4 Fluoride and Arsenic Reduction Filters are designed to be used in conjunction with the Berkey Earth® Elements or the Super Sterasyl™ Ceramic Filter Elements 
  • Attach to the bottom of the Berkey Earth®  Elements or the Super Sterasyl™ Ceramic Filter Elements and sit in the lower chamber of the Berkey unit
  • Number of PF-4s in the bottom chamber must match the number of Berkey Earth® Elements or Super Sterasyl™ Ceramic Filter Elements in the top chamber; for example, 2 Berkey Earth® Elements would require 2 PF-4 Filters
  • PF-4 Filters need replacement after six months

CLICK HERE For PF-4 Information via Berkey Knowledge Base 

Also for an in depth read of a study carried out by a scientific panel from EFSA the European Food Safety Authority regarding the safety in use of the activated alumina treatment for the removal of fluoride, ultimately finding that the use of Activated Alumina will not pose a risk to human healthPlease Read Here

PF-2/PF-4 Fluoride Reduction Media Information                                                      

(Extract from Proprietary Products Data Information Sheets)

Fluoride Reduction Media Definition: The fluoride removal media is the same mineral that rubies and sapphires (corundum) are made from, in crystalline form. The process ‘selective adsorption’ is a physical/ chemical reaction whereby the fluoride ions are removed by binding to the media’s oxidised surface.

PRODUCT INFORMATION:

The Berkey® Proprietary Fluoride Reduction Media is a new and improved high yield aluminum oxide (corundum) especially formulated for the removal of Fluoride and arsenic from drinking water. This media has an unusually high surface area of more than 350 sq.m./gram of material which allows more efficient removal of the Fluoride and arsenic ions. This high surface area is enhanced by controlled development of the pore size distribution from 30 Angstroms to 100 Angstroms, providing greater accessibility to the surface active sites through bulk diffusion.

Uniform particle size low silica content and high purity, is characteristic of the new and improved Proprietary Fluoride Reduction Media which insures effective operation in the reduction of Fluoride. The extremely low silica content significantly reduces the tendency of the silica to form silicone tetra fluoride which reacts with both the media and the pipes leading to clogging and corrosion problems.

PRODUCT APPLICATION:

The Proprietary Fluoride Reduction Media is an EPA approved method for removing Fluoride from drinking water. This product can be used in various filtration products and can also be packed in large columns for high volume applications including drinking water treatment plants and waste treatment plants. The Proprietary Fluoride Reduction Media can be used in various applications where defluorination is necessary.

For maximum removal efficiency, maintain the water being treated between a PH level of 5-7. The media can be regenerated for enhanced performance lifetime with many applications. This makes the Proprietary Fluoride Reduction Media the most effective and economical defluorination product on the market.

TYPICAL PHYSICAL PROPERTIES OF PROPRIETARY FLUORIDE REDUCTION MEDIA:

  • Surface Area, sq. m/g. 350
  • Total Pore volume, cc./g. .55
  • Aluminum Oxide XRD Phase Chi, Gamma, Amorphous
  • Crush Strength, lbs (kg) 30 (14)
  • Abrasion Loss wt% 0.1 Bulk
  • Density, lbs/cu. ft (kg/cu. m) 47 (750)

TYPICAL CHEMICAL PROPERTIES OF PROPRIETARY FLUORIDE REDUCTION MEDIA:

                                         Wt %

  • AL2O3                        95.1  
  • SiO2                           0.02
  • Fe2O3                        0.02
  • Na2O                          0.30

GENERAL INFORMATION:

The Proprietary Fluoride Reduction Media has been specially prepared to optimize the media for more efficient removal of the Fluoride ion. Testing of the material is important for each application as influent water PH, quality and purify of the water and various metal ion concentrations are all variables which influence the effectiveness of the media. Note that the material is most efficient between a PH of 5 and 7.

Testing for fluoride removal was based on 20-30 ppm of the ion in the influent aqueous solution at a flow rate of no more than 3 gpm per cubic foot (25kg) of media. Results of < 1 ppm of the fluoride ion in the effluent were typical for the media. Under optimum conditions, effluent concentrations of less than 50 ppb of Fluoride ion were found to be readily achieved. Results may vary significantly with each particular application.

OTHER INFORMATION:

1. Calcium & Sodium Fluoride. The Proprietary Fluoride Reduction Media will remove any types of inorganic fluoride salts. All fluoride salts are soluble in water. So it does not matter what fluoride salts that are in the water, fluoride is present as an anion where the media will absorb fluoride ions in water.

2. Hydro-Fluorosilicic Acid (HFS). We do not have any test data to show how efficient the Proprietary Fluoride Reduction Media will remove hydro-fluosilicic acid. But by adsorption of fluoride anion using alumina, we believe the media will remove hydro-fluosilicic acid better than fluoride. The reason is both compounds are ions with negative charges. The molecular size of hydrofluosilicic acid is much larger than the fluoride ion and hydrofluosilicic acid has two negative charges where as fluoride has only one negative charge. So this negative charge makes hydrofluosislicic acid much easier to adsorb to the media compared to regular fluoride ions.

3. NMCL obtains its Proprietary Fluoride Reduction Media from a third party that manufactures specialized media that targets difficult to remove contaminates, such as Fluoride and Arsenic. The above information provided has been extracted from the supplier’s data sheets and other written communications.