Filtration History
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Short history

A Berkey Water Purifier has its roots with Royal Doulton; definitely not the new kid on the block but a company with 200 years of history.  As early as 1827 John Doulton was in the water filter business, using various earth and clay materials in the first Doulton water filters. In 1837 Queen Victoria had a water filter commissioned and the recognized John Doulton earned the right to embellish each of his units with the Royal Crest because of her pleasure with his product. In 1901 King Edward VII  knighted Henry Doulton and honored the company by authorizing it to use the word ROYAL in reference to its products. For a bit more detail of history click here.


Diatomaceous Earth [D.E.] is a fossil substance made up of tiny silicon shells left by one celled algae called diatoms over the last 150,000,000 years, then refined into exquisite porcelain and pottery. This is at the core of the Doulton ceramic filter element the Sterasyl™ Ceramic Water Filter Elements. The mechanical filtration within the Berkey Water Filter gravity element water filters is designed to clean dubious or unfiltered water into potable water. 

Berkey in the US tested the Black Berkey purification elements which are made with another media called Sterasyl. Sterasyl ceramic filters filter more than 10,000 times the concentration of pathogens per liter than is required by standard test protocol. No pathogens were cultured from the filtered water.  None were able to be detected, even under an electron microscope, setting a new standard in water purification.



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Last modified: October 09, 2022